7=(4r+3)-(8-2r)

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Solution for 7=(4r+3)-(8-2r) equation:


Simplifying
7 = (4r + 3) + -1(8 + -2r)

Reorder the terms:
7 = (3 + 4r) + -1(8 + -2r)

Remove parenthesis around (3 + 4r)
7 = 3 + 4r + -1(8 + -2r)
7 = 3 + 4r + (8 * -1 + -2r * -1)
7 = 3 + 4r + (-8 + 2r)

Reorder the terms:
7 = 3 + -8 + 4r + 2r

Combine like terms: 3 + -8 = -5
7 = -5 + 4r + 2r

Combine like terms: 4r + 2r = 6r
7 = -5 + 6r

Solving
7 = -5 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
7 + -6r = -5 + 6r + -6r

Combine like terms: 6r + -6r = 0
7 + -6r = -5 + 0
7 + -6r = -5

Add '-7' to each side of the equation.
7 + -7 + -6r = -5 + -7

Combine like terms: 7 + -7 = 0
0 + -6r = -5 + -7
-6r = -5 + -7

Combine like terms: -5 + -7 = -12
-6r = -12

Divide each side by '-6'.
r = 2

Simplifying
r = 2

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