7x+42=4x+90

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Solution for 7x+42=4x+90 equation:


Simplifying
7x + 42 = 4x + 90

Reorder the terms:
42 + 7x = 4x + 90

Reorder the terms:
42 + 7x = 90 + 4x

Solving
42 + 7x = 90 + 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.
42 + 7x + -4x = 90 + 4x + -4x

Combine like terms: 7x + -4x = 3x
42 + 3x = 90 + 4x + -4x

Combine like terms: 4x + -4x = 0
42 + 3x = 90 + 0
42 + 3x = 90

Add '-42' to each side of the equation.
42 + -42 + 3x = 90 + -42

Combine like terms: 42 + -42 = 0
0 + 3x = 90 + -42
3x = 90 + -42

Combine like terms: 90 + -42 = 48
3x = 48

Divide each side by '3'.
x = 16

Simplifying
x = 16

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