7=7(x+3)+x

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Solution for 7=7(x+3)+x equation:


Simplifying
7 = 7(x + 3) + x

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

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

Solving
7 = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
7 + -8x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
7 + -8x = 21 + 0
7 + -8x = 21

Add '-7' to each side of the equation.
7 + -7 + -8x = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -8x = 21 + -7
-8x = 21 + -7

Combine like terms: 21 + -7 = 14
-8x = 14

Divide each side by '-8'.
x = -1.75

Simplifying
x = -1.75

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