8(x-5)+7(-4x-1)=-21(x+1)-8

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Solution for 8(x-5)+7(-4x-1)=-21(x+1)-8 equation:


Simplifying
8(x + -5) + 7(-4x + -1) = -21(x + 1) + -8

Reorder the terms:
8(-5 + x) + 7(-4x + -1) = -21(x + 1) + -8
(-5 * 8 + x * 8) + 7(-4x + -1) = -21(x + 1) + -8
(-40 + 8x) + 7(-4x + -1) = -21(x + 1) + -8

Reorder the terms:
-40 + 8x + 7(-1 + -4x) = -21(x + 1) + -8
-40 + 8x + (-1 * 7 + -4x * 7) = -21(x + 1) + -8
-40 + 8x + (-7 + -28x) = -21(x + 1) + -8

Reorder the terms:
-40 + -7 + 8x + -28x = -21(x + 1) + -8

Combine like terms: -40 + -7 = -47
-47 + 8x + -28x = -21(x + 1) + -8

Combine like terms: 8x + -28x = -20x
-47 + -20x = -21(x + 1) + -8

Reorder the terms:
-47 + -20x = -21(1 + x) + -8
-47 + -20x = (1 * -21 + x * -21) + -8
-47 + -20x = (-21 + -21x) + -8

Reorder the terms:
-47 + -20x = -21 + -8 + -21x

Combine like terms: -21 + -8 = -29
-47 + -20x = -29 + -21x

Solving
-47 + -20x = -29 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
-47 + -20x + 21x = -29 + -21x + 21x

Combine like terms: -20x + 21x = 1x
-47 + 1x = -29 + -21x + 21x

Combine like terms: -21x + 21x = 0
-47 + 1x = -29 + 0
-47 + 1x = -29

Add '47' to each side of the equation.
-47 + 47 + 1x = -29 + 47

Combine like terms: -47 + 47 = 0
0 + 1x = -29 + 47
1x = -29 + 47

Combine like terms: -29 + 47 = 18
1x = 18

Divide each side by '1'.
x = 18

Simplifying
x = 18

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