7x+30=90

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Solution for 7x+30=90 equation: 


Simplifying
7x + 30 = 90

Reorder the terms:
30 + 7x = 90

Solving
30 + 7x = 90

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 7x = 90 + -30

Combine like terms: 30 + -30 = 0
0 + 7x = 90 + -30
7x = 90 + -30

Combine like terms: 90 + -30 = 60
7x = 60

Divide each side by '7'.
x = 8.571428571

Simplifying
x = 8.571428571

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