70+3x-1=90

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Solution for 70+3x-1=90 equation:


Simplifying
70 + 3x + -1 = 90

Reorder the terms:
70 + -1 + 3x = 90

Combine like terms: 70 + -1 = 69
69 + 3x = 90

Solving
69 + 3x = 90

Solving for variable 'x'.

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

Add '-69' to each side of the equation.
69 + -69 + 3x = 90 + -69

Combine like terms: 69 + -69 = 0
0 + 3x = 90 + -69
3x = 90 + -69

Combine like terms: 90 + -69 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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