-5(1+3x)=100

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Solution for -5(1+3x)=100 equation: 


Simplifying
-5(1 + 3x) = 100
(1 * -5 + 3x * -5) = 100
(-5 + -15x) = 100

Solving
-5 + -15x = 100

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 + -15x = 100 + 5

Combine like terms: -5 + 5 = 0
0 + -15x = 100 + 5
-15x = 100 + 5

Combine like terms: 100 + 5 = 105
-15x = 105

Divide each side by '-15'.
x = -7

Simplifying
x = -7

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