3x+21+5x=7x+24

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Solution for 3x+21+5x=7x+24 equation:


Simplifying
3x + 21 + 5x = 7x + 24

Reorder the terms:
21 + 3x + 5x = 7x + 24

Combine like terms: 3x + 5x = 8x
21 + 8x = 7x + 24

Reorder the terms:
21 + 8x = 24 + 7x

Solving
21 + 8x = 24 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
21 + 8x + -7x = 24 + 7x + -7x

Combine like terms: 8x + -7x = 1x
21 + 1x = 24 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + 1x = 24 + 0
21 + 1x = 24

Add '-21' to each side of the equation.
21 + -21 + 1x = 24 + -21

Combine like terms: 21 + -21 = 0
0 + 1x = 24 + -21
1x = 24 + -21

Combine like terms: 24 + -21 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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