12+7=4a-21

Simple and best practice solution for 12+7=4a-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 12+7=4a-21 equation: 



12+7=4a-21

We move all terms to the left:

12+7-(4a-21)=0

We add all the numbers together, and all the variables

-(4a-21)+19=0

We get rid of parentheses

-4a+21+19=0

We add all the numbers together, and all the variables

-4a+40=0

We move all terms containing a to the left, all other terms to the right

-4a=-40

a=-40/-4

a=+10

See similar equations:

| -2.1(z×0.9)=2.2(z+1.6) | | 3(x-2)-5(x-4)=x-2-5X | | -10+15x=3(4x-6)+3x | | ((x+8)/(x-8))/((x^2-64)/(8-x))=0 | | x-11=-29 | | 17r+7=239-12r | | 16x-2=20x+7 | | 8+7v=-v+6(7v+7) | | -5=4-(5-c) | | A/6+(2a-3)/4=7a/3 | | 5x+(x+10)=148 | | 20=4-(n+9) | | 1/8d=1 | | 2(3x+5)=-5(5x-4) | | -5u−4u=18 | | p=-0.01^2+168-180,000 | | 2a(a-4)=3a+6 | | -5/2=3/4z+2/15 | | 12=x/3-1 | | 4(x-3)+5=-3 | | -29=7+3(2g-6) | | -3=7+3(2g-6) | | -2=x-8/14 | | 10w+3=103 | | 2x+15=-x+39 | | -5=-8+k/5 | | 2x/2=-34/2 | | -20j−-11j−10=-1 | | -5=x+3+x | | 4(5x+3)=2(6x-4) | | 9/7=6/n-6 | | 17p+6p+-4=19 |

Equations solver categories