7x+48=21x-78

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Solution for 7x+48=21x-78 equation:


Simplifying
7x + 48 = 21x + -78

Reorder the terms:
48 + 7x = 21x + -78

Reorder the terms:
48 + 7x = -78 + 21x

Solving
48 + 7x = -78 + 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.
48 + 7x + -21x = -78 + 21x + -21x

Combine like terms: 7x + -21x = -14x
48 + -14x = -78 + 21x + -21x

Combine like terms: 21x + -21x = 0
48 + -14x = -78 + 0
48 + -14x = -78

Add '-48' to each side of the equation.
48 + -48 + -14x = -78 + -48

Combine like terms: 48 + -48 = 0
0 + -14x = -78 + -48
-14x = -78 + -48

Combine like terms: -78 + -48 = -126
-14x = -126

Divide each side by '-14'.
x = 9

Simplifying
x = 9

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