3x+15+4x+20=21

Simple and best practice solution for 3x+15+4x+20=21 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 3x+15+4x+20=21 equation:


Simplifying
3x + 15 + 4x + 20 = 21

Reorder the terms:
15 + 20 + 3x + 4x = 21

Combine like terms: 15 + 20 = 35
35 + 3x + 4x = 21

Combine like terms: 3x + 4x = 7x
35 + 7x = 21

Solving
35 + 7x = 21

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 7x = 21 + -35

Combine like terms: 35 + -35 = 0
0 + 7x = 21 + -35
7x = 21 + -35

Combine like terms: 21 + -35 = -14
7x = -14

Divide each side by '7'.
x = -2

Simplifying
x = -2

See similar equations:

| 6x-126=2x-10 | | 5y-9=8y+7 | | 5x-15=2x+33 | | 48x+72y=12 | | 8.25=4a+1.24 | | 3+x=2+11x | | 6(3x-5)+8=2(3x-5) | | 3+x=2+11 | | 5+x=x+7 | | 13x+8y=-20 | | x=0.35x+0.65X-18 | | 6a^2+57a+72=0 | | 2x-1=5(p-1)-2(7-2p) | | c+(1c+2)-2=0 | | 4(u-4)=-5u-43 | | 5-4ln(x)=10 | | 8x+12y=52 | | 63=-3x+5(-4x-15) | | X+1=4y-y^2 | | 6x+4y=178 | | w^3-3w^2-4w+12=0 | | 20+8(2-c)=44 | | 20(-5+x)-3=17 | | 4x+=2x+20 | | X^2-6x-12y-3=0 | | 2(3x-2)+2(3x-2)=32 | | 4c-15=c | | 19=-x-2x+7 | | -7+5b=1-8(1+8b) | | 3secx+2=8 | | 4(x+3)-9(x+2)=x-24 | | 2x+7x-114=0 |

Equations solver categories