7x+(x+20)=45

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Solution for 7x+(x+20)=45 equation:


Simplifying
7x + (x + 20) = 45

Reorder the terms:
7x + (20 + x) = 45

Remove parenthesis around (20 + x)
7x + 20 + x = 45

Reorder the terms:
20 + 7x + x = 45

Combine like terms: 7x + x = 8x
20 + 8x = 45

Solving
20 + 8x = 45

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 8x = 45 + -20

Combine like terms: 20 + -20 = 0
0 + 8x = 45 + -20
8x = 45 + -20

Combine like terms: 45 + -20 = 25
8x = 25

Divide each side by '8'.
x = 3.125

Simplifying
x = 3.125

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