y+4=.8(x+7)

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Solution for y+4=.8(x+7) equation:


Simplifying
y + 4 = 0.8(x + 7)

Reorder the terms:
4 + y = 0.8(x + 7)

Reorder the terms:
4 + y = 0.8(7 + x)
4 + y = (7 * 0.8 + x * 0.8)
4 + y = (5.6 + 0.8x)

Solving
4 + y = 5.6 + 0.8x

Solving for variable 'y'.

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

Add '-4' to each side of the equation.
4 + -4 + y = 5.6 + -4 + 0.8x

Combine like terms: 4 + -4 = 0
0 + y = 5.6 + -4 + 0.8x
y = 5.6 + -4 + 0.8x

Combine like terms: 5.6 + -4 = 1.6
y = 1.6 + 0.8x

Simplifying
y = 1.6 + 0.8x

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