10x-5(x+1)=15

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Solution for 10x-5(x+1)=15 equation:


Simplifying
10x + -5(x + 1) = 15

Reorder the terms:
10x + -5(1 + x) = 15
10x + (1 * -5 + x * -5) = 15
10x + (-5 + -5x) = 15

Reorder the terms:
-5 + 10x + -5x = 15

Combine like terms: 10x + -5x = 5x
-5 + 5x = 15

Solving
-5 + 5x = 15

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 5x = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 5x = 15 + 5
5x = 15 + 5

Combine like terms: 15 + 5 = 20
5x = 20

Divide each side by '5'.
x = 4

Simplifying
x = 4

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