7x-1+8=15

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Solution for 7x-1+8=15 equation: 


Simplifying
7x + -1 + 8 = 15

Reorder the terms:
-1 + 8 + 7x = 15

Combine like terms: -1 + 8 = 7
7 + 7x = 15

Solving
7 + 7x = 15

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 7x = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 7x = 15 + -7
7x = 15 + -7

Combine like terms: 15 + -7 = 8
7x = 8

Divide each side by '7'.
x = 1.142857143

Simplifying
x = 1.142857143

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