3x+5(x-10)+2(x+20)=890

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Solution for 3x+5(x-10)+2(x+20)=890 equation:


Simplifying
3x + 5(x + -10) + 2(x + 20) = 890

Reorder the terms:
3x + 5(-10 + x) + 2(x + 20) = 890
3x + (-10 * 5 + x * 5) + 2(x + 20) = 890
3x + (-50 + 5x) + 2(x + 20) = 890

Reorder the terms:
3x + -50 + 5x + 2(20 + x) = 890
3x + -50 + 5x + (20 * 2 + x * 2) = 890
3x + -50 + 5x + (40 + 2x) = 890

Reorder the terms:
-50 + 40 + 3x + 5x + 2x = 890

Combine like terms: -50 + 40 = -10
-10 + 3x + 5x + 2x = 890

Combine like terms: 3x + 5x = 8x
-10 + 8x + 2x = 890

Combine like terms: 8x + 2x = 10x
-10 + 10x = 890

Solving
-10 + 10x = 890

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 10x = 890 + 10

Combine like terms: -10 + 10 = 0
0 + 10x = 890 + 10
10x = 890 + 10

Combine like terms: 890 + 10 = 900
10x = 900

Divide each side by '10'.
x = 90

Simplifying
x = 90

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