90=(3x+70)+(x+20)

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Solution for 90=(3x+70)+(x+20) equation:


Simplifying
90 = (3x + 70) + (x + 20)

Reorder the terms:
90 = (70 + 3x) + (x + 20)

Remove parenthesis around (70 + 3x)
90 = 70 + 3x + (x + 20)

Reorder the terms:
90 = 70 + 3x + (20 + x)

Remove parenthesis around (20 + x)
90 = 70 + 3x + 20 + x

Reorder the terms:
90 = 70 + 20 + 3x + x

Combine like terms: 70 + 20 = 90
90 = 90 + 3x + x

Combine like terms: 3x + x = 4x
90 = 90 + 4x

Add '-90' to each side of the equation.
90 + -90 = 90 + -90 + 4x

Combine like terms: 90 + -90 = 0
0 = 90 + -90 + 4x

Combine like terms: 90 + -90 = 0
0 = 0 + 4x
0 = 4x

Solving
0 = 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
0 + -4x = 4x + -4x
Remove the zero:
-4x = 4x + -4x

Combine like terms: 4x + -4x = 0
-4x = 0

Divide each side by '-4'.
x = 0

Simplifying
x = 0

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