142=7+3(-7x+3)

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Solution for 142=7+3(-7x+3) equation:


Simplifying
142 = 7 + 3(-7x + 3)

Reorder the terms:
142 = 7 + 3(3 + -7x)
142 = 7 + (3 * 3 + -7x * 3)
142 = 7 + (9 + -21x)

Combine like terms: 7 + 9 = 16
142 = 16 + -21x

Solving
142 = 16 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
142 + 21x = 16 + -21x + 21x

Combine like terms: -21x + 21x = 0
142 + 21x = 16 + 0
142 + 21x = 16

Add '-142' to each side of the equation.
142 + -142 + 21x = 16 + -142

Combine like terms: 142 + -142 = 0
0 + 21x = 16 + -142
21x = 16 + -142

Combine like terms: 16 + -142 = -126
21x = -126

Divide each side by '21'.
x = -6

Simplifying
x = -6

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