0.7x-0.7=8.4

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Solution for 0.7x-0.7=8.4 equation: 


Simplifying
0.7x + -0.7 = 8.4

Reorder the terms:
-0.7 + 0.7x = 8.4

Solving
-0.7 + 0.7x = 8.4

Solving for variable 'x'.

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

Add '0.7' to each side of the equation.
-0.7 + 0.7 + 0.7x = 8.4 + 0.7

Combine like terms: -0.7 + 0.7 = 0.0
0.0 + 0.7x = 8.4 + 0.7
0.7x = 8.4 + 0.7

Combine like terms: 8.4 + 0.7 = 9.1
0.7x = 9.1

Divide each side by '0.7'.
x = 13

Simplifying
x = 13

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