4y+7=2x-21

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Solution for 4y+7=2x-21 equation:


Simplifying
4y + 7 = 2x + -21

Reorder the terms:
7 + 4y = 2x + -21

Reorder the terms:
7 + 4y = -21 + 2x

Solving
7 + 4y = -21 + 2x

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + 4y = -21 + -7 + 2x

Combine like terms: 7 + -7 = 0
0 + 4y = -21 + -7 + 2x
4y = -21 + -7 + 2x

Combine like terms: -21 + -7 = -28
4y = -28 + 2x

Divide each side by '4'.
y = -7 + 0.5x

Simplifying
y = -7 + 0.5x

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