4(5r-3)=3(-7+5r)-4r

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Solution for 4(5r-3)=3(-7+5r)-4r equation:


Simplifying
4(5r + -3) = 3(-7 + 5r) + -4r

Reorder the terms:
4(-3 + 5r) = 3(-7 + 5r) + -4r
(-3 * 4 + 5r * 4) = 3(-7 + 5r) + -4r
(-12 + 20r) = 3(-7 + 5r) + -4r
-12 + 20r = (-7 * 3 + 5r * 3) + -4r
-12 + 20r = (-21 + 15r) + -4r

Combine like terms: 15r + -4r = 11r
-12 + 20r = -21 + 11r

Solving
-12 + 20r = -21 + 11r

Solving for variable 'r'.

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

Add '-11r' to each side of the equation.
-12 + 20r + -11r = -21 + 11r + -11r

Combine like terms: 20r + -11r = 9r
-12 + 9r = -21 + 11r + -11r

Combine like terms: 11r + -11r = 0
-12 + 9r = -21 + 0
-12 + 9r = -21

Add '12' to each side of the equation.
-12 + 12 + 9r = -21 + 12

Combine like terms: -12 + 12 = 0
0 + 9r = -21 + 12
9r = -21 + 12

Combine like terms: -21 + 12 = -9
9r = -9

Divide each side by '9'.
r = -1

Simplifying
r = -1

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