84-4y=7y+18

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Solution for 84-4y=7y+18 equation:


Simplifying
84 + -4y = 7y + 18

Reorder the terms:
84 + -4y = 18 + 7y

Solving
84 + -4y = 18 + 7y

Solving for variable 'y'.

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

Add '-7y' to each side of the equation.
84 + -4y + -7y = 18 + 7y + -7y

Combine like terms: -4y + -7y = -11y
84 + -11y = 18 + 7y + -7y

Combine like terms: 7y + -7y = 0
84 + -11y = 18 + 0
84 + -11y = 18

Add '-84' to each side of the equation.
84 + -84 + -11y = 18 + -84

Combine like terms: 84 + -84 = 0
0 + -11y = 18 + -84
-11y = 18 + -84

Combine like terms: 18 + -84 = -66
-11y = -66

Divide each side by '-11'.
y = 6

Simplifying
y = 6

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