9(79-9y)+4y=18

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Solution for 9(79-9y)+4y=18 equation:


Simplifying
9(79 + -9y) + 4y = 18
(79 * 9 + -9y * 9) + 4y = 18
(711 + -81y) + 4y = 18

Combine like terms: -81y + 4y = -77y
711 + -77y = 18

Solving
711 + -77y = 18

Solving for variable 'y'.

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

Add '-711' to each side of the equation.
711 + -711 + -77y = 18 + -711

Combine like terms: 711 + -711 = 0
0 + -77y = 18 + -711
-77y = 18 + -711

Combine like terms: 18 + -711 = -693
-77y = -693

Divide each side by '-77'.
y = 9

Simplifying
y = 9

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