-21+3a=-7(7a+3)

Simple and best practice solution for -21+3a=-7(7a+3) 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 -21+3a=-7(7a+3) equation: 



-21+3a=-7(7a+3)

We move all terms to the left:

-21+3a-(-7(7a+3))=0



We calculate terms in parentheses: -(-7(7a+3)), so:

-7(7a+3)

We multiply parentheses

-49a-21

Back to the equation:

-(-49a-21)



We get rid of parentheses

3a+49a+21-21=0

We add all the numbers together, and all the variables

52a=0

a=0/52

a=0

See similar equations:

| 12x-12=4() | | 18000x0.1=x | | 200=35x+25 | | 85-3x+7x+4x-1=180 | | b+6/5=-21 | | 8n+3n=-8+5n+4n | | 8-3y=8y+14/5 | | 15x+35=2^x+12 | | -4a+-11.2=-9.6 | | 4x+3=3x+7x+2=0.5x-1 | | 1040=3x*20 | | 5w+6=31 | | 9=4y-2 | | 7.2-y=6.8 | | 36y=4 | | 2n=n+45 | | 4n+5=143 | | 5*x-4=-29 | | -2*x=-4 | | 5k-(k-2)=2k+28 | | -x+32=180 | | 2.5=2.125+x/2 | | 5m+2=-6+3m | | 4.25+2x=2.5 | | X+y+(y+2)=60 | | 32x-8=-15 | | 6x+4+8x+18+20x+4=180 | | 2(x+2)=9/2 | | 2d=-8+2d | | 4(n−60)=84 | | 1/6(5x+3)-1/2x=1/3(x-5) | | -12y-16y=-28y |

Equations solver categories