20(-2.25)-5y=30

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Solution for 20(-2.25)-5y=30 equation: 


Simplifying
20(-2.25) + -5y = 30

Multiply 20 * -2.25
-45 + -5y = 30

Solving
-45 + -5y = 30

Solving for variable 'y'.

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

Add '45' to each side of the equation.
-45 + 45 + -5y = 30 + 45

Combine like terms: -45 + 45 = 0
0 + -5y = 30 + 45
-5y = 30 + 45

Combine like terms: 30 + 45 = 75
-5y = 75

Divide each side by '-5'.
y = -15

Simplifying
y = -15

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