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

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


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

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

Combine like terms: 7x + 8x = 15x
7 + 15x = -21

Solving
7 + 15x = -21

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 15x = -21 + -7

Combine like terms: 7 + -7 = 0
0 + 15x = -21 + -7
15x = -21 + -7

Combine like terms: -21 + -7 = -28
15x = -28

Divide each side by '15'.
x = -1.866666667

Simplifying
x = -1.866666667

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