3(5-7)=15x-21

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Solution for 3(5-7)=15x-21 equation:


Simplifying
3(5 + -7) = 15x + -21

Combine like terms: 5 + -7 = -2
3(-2) = 15x + -21

Multiply 3 * -2
-6 = 15x + -21

Reorder the terms:
-6 = -21 + 15x

Solving
-6 = -21 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
-6 + -15x = -21 + 15x + -15x

Combine like terms: 15x + -15x = 0
-6 + -15x = -21 + 0
-6 + -15x = -21

Add '6' to each side of the equation.
-6 + 6 + -15x = -21 + 6

Combine like terms: -6 + 6 = 0
0 + -15x = -21 + 6
-15x = -21 + 6

Combine like terms: -21 + 6 = -15
-15x = -15

Divide each side by '-15'.
x = 1

Simplifying
x = 1

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