3(5-y)-4y=18

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Solution for 3(5-y)-4y=18 equation:


Simplifying
3(5 + -1y) + -4y = 18
(5 * 3 + -1y * 3) + -4y = 18
(15 + -3y) + -4y = 18

Combine like terms: -3y + -4y = -7y
15 + -7y = 18

Solving
15 + -7y = 18

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + -7y = 18 + -15

Combine like terms: 15 + -15 = 0
0 + -7y = 18 + -15
-7y = 18 + -15

Combine like terms: 18 + -15 = 3
-7y = 3

Divide each side by '-7'.
y = -0.4285714286

Simplifying
y = -0.4285714286

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