-57=3x-7(-x-49)

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Solution for -57=3x-7(-x-49) equation:


Simplifying
-57 = 3x + -7(-1x + -49)

Reorder the terms:
-57 = 3x + -7(-49 + -1x)
-57 = 3x + (-49 * -7 + -1x * -7)
-57 = 3x + (343 + 7x)

Reorder the terms:
-57 = 343 + 3x + 7x

Combine like terms: 3x + 7x = 10x
-57 = 343 + 10x

Solving
-57 = 343 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
-57 + -10x = 343 + 10x + -10x

Combine like terms: 10x + -10x = 0
-57 + -10x = 343 + 0
-57 + -10x = 343

Add '57' to each side of the equation.
-57 + 57 + -10x = 343 + 57

Combine like terms: -57 + 57 = 0
0 + -10x = 343 + 57
-10x = 343 + 57

Combine like terms: 343 + 57 = 400
-10x = 400

Divide each side by '-10'.
x = -40

Simplifying
x = -40

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