y-(-7)=3(x-(-1))

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Solution for y-(-7)=3(x-(-1)) equation: 


Simplifying
y + -1(-7) = 3(x + -1(-1))

Multiply -1 * -7
y + 7 = 3(x + -1(-1))

Reorder the terms:
7 + y = 3(x + -1(-1))

Multiply -1 * -1
7 + y = 3(x + 1)

Reorder the terms:
7 + y = 3(1 + x)
7 + y = (1 * 3 + x * 3)
7 + y = (3 + 3x)

Solving
7 + y = 3 + 3x

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 + y = 3 + -7 + 3x

Combine like terms: 7 + -7 = 0
0 + y = 3 + -7 + 3x
y = 3 + -7 + 3x

Combine like terms: 3 + -7 = -4
y = -4 + 3x

Simplifying
y = -4 + 3x

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