3x+5(x-0.90)=42

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Solution for 3x+5(x-0.90)=42 equation:


Simplifying
3x + 5(x + -0.90) = 42

Reorder the terms:
3x + 5(-0.90 + x) = 42
3x + (-0.90 * 5 + x * 5) = 42
3x + (-4.5 + 5x) = 42

Reorder the terms:
-4.5 + 3x + 5x = 42

Combine like terms: 3x + 5x = 8x
-4.5 + 8x = 42

Solving
-4.5 + 8x = 42

Solving for variable 'x'.

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

Add '4.5' to each side of the equation.
-4.5 + 4.5 + 8x = 42 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + 8x = 42 + 4.5
8x = 42 + 4.5

Combine like terms: 42 + 4.5 = 46.5
8x = 46.5

Divide each side by '8'.
x = 5.8125

Simplifying
x = 5.8125

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