10x+30=9x+42

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Solution for 10x+30=9x+42 equation:


Simplifying
10x + 30 = 9x + 42

Reorder the terms:
30 + 10x = 9x + 42

Reorder the terms:
30 + 10x = 42 + 9x

Solving
30 + 10x = 42 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
30 + 10x + -9x = 42 + 9x + -9x

Combine like terms: 10x + -9x = 1x
30 + 1x = 42 + 9x + -9x

Combine like terms: 9x + -9x = 0
30 + 1x = 42 + 0
30 + 1x = 42

Add '-30' to each side of the equation.
30 + -30 + 1x = 42 + -30

Combine like terms: 30 + -30 = 0
0 + 1x = 42 + -30
1x = 42 + -30

Combine like terms: 42 + -30 = 12
1x = 12

Divide each side by '1'.
x = 12

Simplifying
x = 12

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