84=-1a+4(2a+7)

Simple and best practice solution for 84=-1a+4(2a+7) 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 84=-1a+4(2a+7) equation:


Simplifying
84 = -1a + 4(2a + 7)

Reorder the terms:
84 = -1a + 4(7 + 2a)
84 = -1a + (7 * 4 + 2a * 4)
84 = -1a + (28 + 8a)

Reorder the terms:
84 = 28 + -1a + 8a

Combine like terms: -1a + 8a = 7a
84 = 28 + 7a

Solving
84 = 28 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
84 + -7a = 28 + 7a + -7a

Combine like terms: 7a + -7a = 0
84 + -7a = 28 + 0
84 + -7a = 28

Add '-84' to each side of the equation.
84 + -84 + -7a = 28 + -84

Combine like terms: 84 + -84 = 0
0 + -7a = 28 + -84
-7a = 28 + -84

Combine like terms: 28 + -84 = -56
-7a = -56

Divide each side by '-7'.
a = 8

Simplifying
a = 8

See similar equations:

| 1.29-.45= | | 5(3x-1)-4(3x-2)=0 | | 2x+24-2x=3x-2 | | -6+9y=11 | | r-2=-16 | | x=360*2/6 | | -5(6p+4)=-230 | | T-5/9=20/21 | | 20y=28x | | x=282/360*12pi | | 7(x+6)-3=81 | | 7a+60=-3 | | 3t+p=102 | | 3x-14-18+3x+4+2x=180 | | 7(x+6)-3=8 | | 5/8=1/4d | | 4002/87 | | 3c+24=28 | | x^(5/6)=2^(5/2) | | 3(1/2)/-7/8= | | 1=5(-2)+b | | 23+6m+14+2m= | | x^(5/6)=5^(5/2) | | -4(n+3)+16=-2n-6 | | 2x-2xz=x/.8 | | -10=h-14 | | f(x)=19+2.5ln(20) | | 7(-v-8)=-84 | | 8x-7=(-12)+6x+1x | | b-2/9=-5 | | 22(12/30)+15(25/30)= | | x*53/2=160 |

Equations solver categories