3x+15=40-10

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Solution for 3x+15=40-10 equation: 


Simplifying
3x + 15 = 40 + -10

Reorder the terms:
15 + 3x = 40 + -10

Combine like terms: 40 + -10 = 30
15 + 3x = 30

Solving
15 + 3x = 30

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 3x = 30 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = 30 + -15
3x = 30 + -15

Combine like terms: 30 + -15 = 15
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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