13-4(5x+1)=3(7-5)-15

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Solution for 13-4(5x+1)=3(7-5)-15 equation: 


Simplifying
13 + -4(5x + 1) = 3(7 + -5) + -15

Reorder the terms:
13 + -4(1 + 5x) = 3(7 + -5) + -15
13 + (1 * -4 + 5x * -4) = 3(7 + -5) + -15
13 + (-4 + -20x) = 3(7 + -5) + -15

Combine like terms: 13 + -4 = 9
9 + -20x = 3(7 + -5) + -15

Combine like terms: 7 + -5 = 2
9 + -20x = 3(2) + -15

Multiply 3 * 2
9 + -20x = 6 + -15

Combine like terms: 6 + -15 = -9
9 + -20x = -9

Solving
9 + -20x = -9

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -20x = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -20x = -9 + -9
-20x = -9 + -9

Combine like terms: -9 + -9 = -18
-20x = -18

Divide each side by '-20'.
x = 0.9

Simplifying
x = 0.9

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