3x+5(1+x)+15=7x

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Solution for 3x+5(1+x)+15=7x equation:


Simplifying
3x + 5(1 + x) + 15 = 7x
3x + (1 * 5 + x * 5) + 15 = 7x
3x + (5 + 5x) + 15 = 7x

Reorder the terms:
5 + 15 + 3x + 5x = 7x

Combine like terms: 5 + 15 = 20
20 + 3x + 5x = 7x

Combine like terms: 3x + 5x = 8x
20 + 8x = 7x

Solving
20 + 8x = 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
20 + 8x + -7x = 7x + -7x

Combine like terms: 8x + -7x = 1x
20 + 1x = 7x + -7x

Combine like terms: 7x + -7x = 0
20 + 1x = 0

Add '-20' to each side of the equation.
20 + -20 + 1x = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 1x = 0 + -20
1x = 0 + -20

Combine like terms: 0 + -20 = -20
1x = -20

Divide each side by '1'.
x = -20

Simplifying
x = -20

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