7(X)+4(y)=5(90)

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Solution for 7(X)+4(y)=5(90) equation: 


Simplifying
7(X) + 4(y) = 5(90)

Multiply 5 * 90
7X + 4y = 450

Solving
7X + 4y = 450

Solving for variable 'X'.

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

Add '-4y' to each side of the equation.
7X + 4y + -4y = 450 + -4y

Combine like terms: 4y + -4y = 0
7X + 0 = 450 + -4y
7X = 450 + -4y

Divide each side by '7'.
X = 64.28571429 + -0.5714285714y

Simplifying
X = 64.28571429 + -0.5714285714y

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