10x+9=7x+30

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Solution for 10x+9=7x+30 equation:


Simplifying
10x + 9 = 7x + 30

Reorder the terms:
9 + 10x = 7x + 30

Reorder the terms:
9 + 10x = 30 + 7x

Solving
9 + 10x = 30 + 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.
9 + 10x + -7x = 30 + 7x + -7x

Combine like terms: 10x + -7x = 3x
9 + 3x = 30 + 7x + -7x

Combine like terms: 7x + -7x = 0
9 + 3x = 30 + 0
9 + 3x = 30

Add '-9' to each side of the equation.
9 + -9 + 3x = 30 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = 30 + -9
3x = 30 + -9

Combine like terms: 30 + -9 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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