7-3=r-4(2+r)

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Solution for 7-3=r-4(2+r) equation:


Simplifying
7 + -3 = r + -4(2 + r)

Combine like terms: 7 + -3 = 4
4 = r + -4(2 + r)
4 = r + (2 * -4 + r * -4)
4 = r + (-8 + -4r)

Reorder the terms:
4 = -8 + r + -4r

Combine like terms: r + -4r = -3r
4 = -8 + -3r

Solving
4 = -8 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
4 + 3r = -8 + -3r + 3r

Combine like terms: -3r + 3r = 0
4 + 3r = -8 + 0
4 + 3r = -8

Add '-4' to each side of the equation.
4 + -4 + 3r = -8 + -4

Combine like terms: 4 + -4 = 0
0 + 3r = -8 + -4
3r = -8 + -4

Combine like terms: -8 + -4 = -12
3r = -12

Divide each side by '3'.
r = -4

Simplifying
r = -4

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