8x+4-7=15

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Solution for 8x+4-7=15 equation: 


Simplifying
8x + 4 + -7 = 15

Reorder the terms:
4 + -7 + 8x = 15

Combine like terms: 4 + -7 = -3
-3 + 8x = 15

Solving
-3 + 8x = 15

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 8x = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 8x = 15 + 3
8x = 15 + 3

Combine like terms: 15 + 3 = 18
8x = 18

Divide each side by '8'.
x = 2.25

Simplifying
x = 2.25

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