10x+20(x-3)=90

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Solution for 10x+20(x-3)=90 equation:


Simplifying
10x + 20(x + -3) = 90

Reorder the terms:
10x + 20(-3 + x) = 90
10x + (-3 * 20 + x * 20) = 90
10x + (-60 + 20x) = 90

Reorder the terms:
-60 + 10x + 20x = 90

Combine like terms: 10x + 20x = 30x
-60 + 30x = 90

Solving
-60 + 30x = 90

Solving for variable 'x'.

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

Add '60' to each side of the equation.
-60 + 60 + 30x = 90 + 60

Combine like terms: -60 + 60 = 0
0 + 30x = 90 + 60
30x = 90 + 60

Combine like terms: 90 + 60 = 150
30x = 150

Divide each side by '30'.
x = 5

Simplifying
x = 5

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