0.8X+0.2*0.7x=90

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Solution for 0.8X+0.2*0.7x=90 equation: 


Simplifying
0.8X + 0.2 * 0.7x = 90

Multiply 0.2 * 0.7
0.8X + 0.14x = 90

Solving
0.8X + 0.14x = 90

Solving for variable 'X'.

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

Add '-0.14x' to each side of the equation.
0.8X + 0.14x + -0.14x = 90 + -0.14x

Combine like terms: 0.14x + -0.14x = 0.00
0.8X + 0.00 = 90 + -0.14x
0.8X = 90 + -0.14x

Divide each side by '0.8'.
X = 112.5 + -0.175x

Simplifying
X = 112.5 + -0.175x

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