10x-30=640

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Solution for 10x-30=640 equation: 


Simplifying
10x + -30 = 640

Reorder the terms:
-30 + 10x = 640

Solving
-30 + 10x = 640

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 + 10x = 640 + 30

Combine like terms: -30 + 30 = 0
0 + 10x = 640 + 30
10x = 640 + 30

Combine like terms: 640 + 30 = 670
10x = 670

Divide each side by '10'.
x = 67

Simplifying
x = 67

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