y(70-1y)+y=11

Simple and best practice solution for y(70-1y)+y=11 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for y(70-1y)+y=11 equation:


Simplifying
y(70 + -1y) + y = 11
(70 * y + -1y * y) + y = 11
(70y + -1y2) + y = 11

Reorder the terms:
70y + y + -1y2 = 11

Combine like terms: 70y + y = 71y
71y + -1y2 = 11

Solving
71y + -1y2 = 11

Solving for variable 'y'.

Reorder the terms:
-11 + 71y + -1y2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 71y + -1y2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
11 + -71y + y2 = 0

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + -71y + -11 + y2 = 0 + -11

Reorder the terms:
11 + -11 + -71y + y2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -71y + y2 = 0 + -11
-71y + y2 = 0 + -11

Combine like terms: 0 + -11 = -11
-71y + y2 = -11

The y term is -71y.  Take half its coefficient (-35.5).
Square it (1260.25) and add it to both sides.

Add '1260.25' to each side of the equation.
-71y + 1260.25 + y2 = -11 + 1260.25

Reorder the terms:
1260.25 + -71y + y2 = -11 + 1260.25

Combine like terms: -11 + 1260.25 = 1249.25
1260.25 + -71y + y2 = 1249.25

Factor a perfect square on the left side:
(y + -35.5)(y + -35.5) = 1249.25

Calculate the square root of the right side: 35.344730866

Break this problem into two subproblems by setting 
(y + -35.5) equal to 35.344730866 and -35.344730866.

Subproblem 1

y + -35.5 = 35.344730866 Simplifying y + -35.5 = 35.344730866 Reorder the terms: -35.5 + y = 35.344730866 Solving -35.5 + y = 35.344730866 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '35.5' to each side of the equation. -35.5 + 35.5 + y = 35.344730866 + 35.5 Combine like terms: -35.5 + 35.5 = 0.0 0.0 + y = 35.344730866 + 35.5 y = 35.344730866 + 35.5 Combine like terms: 35.344730866 + 35.5 = 70.844730866 y = 70.844730866 Simplifying y = 70.844730866

Subproblem 2

y + -35.5 = -35.344730866 Simplifying y + -35.5 = -35.344730866 Reorder the terms: -35.5 + y = -35.344730866 Solving -35.5 + y = -35.344730866 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '35.5' to each side of the equation. -35.5 + 35.5 + y = -35.344730866 + 35.5 Combine like terms: -35.5 + 35.5 = 0.0 0.0 + y = -35.344730866 + 35.5 y = -35.344730866 + 35.5 Combine like terms: -35.344730866 + 35.5 = 0.155269134 y = 0.155269134 Simplifying y = 0.155269134

Solution

The solution to the problem is based on the solutions from the subproblems. y = {70.844730866, 0.155269134}

See similar equations:

| 4(s+2)+s-1= | | 2(2.9+4(2.9))=x | | 15-x=-22 | | 15-7=-22 | | 7.6+2.4(10)-10=x | | -3x+2x^2=-18 | | x+y=70 | | -11-8= | | -26/2+4 | | 2x^2y(3x+4y)= | | 7y=6X-14 | | 46.9/5=x | | 8.9+7.6(5)=x | | 8.9+7.6(5)5=x | | -26/2=4 | | 7y-8+6y-3= | | X/31=-9 | | 6x^2+9x=-3 | | 3(9-2y)+5y=20 | | y=2x^5-12x^3+10x | | 4+2d-4d= | | 6(10-3)=x | | 5=x/3+10 | | 3/5x=10-6/5 | | .2(x-3)=x+.6 | | (x-4)/2 | | -x/4=-3 | | 5x-11=4y | | 6=x/3 | | 12r+18(r+.22)=44.46 | | 2x+1+4x-3=4 | | (w+5)(w+5)=2(w^2)+16w+33 |

Equations solver categories