7r+3(7-r)=-(r+4)

Simple and best practice solution for 7r+3(7-r)=-(r+4) 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 7r+3(7-r)=-(r+4) equation:


Simplifying
7r + 3(7 + -1r) = -1(r + 4)
7r + (7 * 3 + -1r * 3) = -1(r + 4)
7r + (21 + -3r) = -1(r + 4)

Reorder the terms:
21 + 7r + -3r = -1(r + 4)

Combine like terms: 7r + -3r = 4r
21 + 4r = -1(r + 4)

Reorder the terms:
21 + 4r = -1(4 + r)
21 + 4r = (4 * -1 + r * -1)
21 + 4r = (-4 + -1r)

Solving
21 + 4r = -4 + -1r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add 'r' to each side of the equation.
21 + 4r + r = -4 + -1r + r

Combine like terms: 4r + r = 5r
21 + 5r = -4 + -1r + r

Combine like terms: -1r + r = 0
21 + 5r = -4 + 0
21 + 5r = -4

Add '-21' to each side of the equation.
21 + -21 + 5r = -4 + -21

Combine like terms: 21 + -21 = 0
0 + 5r = -4 + -21
5r = -4 + -21

Combine like terms: -4 + -21 = -25
5r = -25

Divide each side by '5'.
r = -5

Simplifying
r = -5

See similar equations:

| -3(6-2x)+4x=-(2x-8) | | 8a+5(1-a)=4a-6 | | 9(2c+6)+1=26 | | 3(5x+2)=9 | | 10=15+5x | | y^2=7y-7 | | 8x+17=6x+77 | | 47-4x=5x+15 | | (a-1)(a-4)x=a-2(x+1) | | 2a^2x+3=3a+2x | | 2x-15=22+92 | | (4x-6)(2x-1)= | | 9-7x=214-42x | | -47-3x=9x-10 | | 5x+x+3=x+15 | | 4x^2=160 | | 12a+(7a-5a)= | | 9x=81-49(x-3) | | 115-4x=14x+21 | | 9-9x=27-16x | | 133-3x=6x+7 | | 4x+3=2x+10 | | 2x^2-4xy+4y^2-6x+9=0 | | 3x+9=63x-3x | | 2(x-1)=3x-1 | | 5(x+11)=49 | | 2x+36=5x+12 | | -16t^2+48t=48 | | 5x-4-2x+5=15 | | 2x+5-5x-4=15 | | 16t^2+4t=420 | | 10x+14=22 |

Equations solver categories