7(a+3)=84

Simple and best practice solution for 7(a+3)=84 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 7(a+3)=84 equation: 


Simplifying
7(a + 3) = 84

Reorder the terms:
7(3 + a) = 84
(3 * 7 + a * 7) = 84
(21 + 7a) = 84

Solving
21 + 7a = 84

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 7a = 84 + -21

Combine like terms: 21 + -21 = 0
0 + 7a = 84 + -21
7a = 84 + -21

Combine like terms: 84 + -21 = 63
7a = 63

Divide each side by '7'.
a = 9

Simplifying
a = 9

See similar equations:

| 60y^2+3y-3=0 | | 4=2c-4 | | 4d^2+16d+16=0 | | 4e-1=31 | | 7p=14 | | 15=(x+6)(x-8) | | 3(m+5)-3(m+3)=6 | | 10=-5t^2+15t+10 | | 8u-3=4u+9 | | 6x^3-30x^2+24x=0 | | 8n-23=41 | | 5(x-2)-5x=10 | | 32=7e-17 | | 4(7c+2)=28c | | 14-9x=53-16x | | 7d+2=5d-3 | | x+3(2x-4)=19 | | d+3=2(9-d) | | 3y^2-9y-2=0 | | 229-2x=43x+24 | | 5(w+3)+3(w+1)=14 | | 116-3x=4x+11 | | 12-8x=42-22x | | 4f^2-64=0 | | 2x^2+8x+9=0 | | x^2-22-2x+4=0 | | -4m-7=8-9m | | x^2-2*x+4=0 | | -4m-7=8-9 | | 142-5x=5x+12 | | X^3-x^2+8x-8=0 | | 47x+79=973 |

Equations solver categories