3(5r-5)-4(r-8)=

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Solution for 3(5r-5)-4(r-8)= equation:


Simplifying
3(5r + -5) + -4(r + -8) = 0

Reorder the terms:
3(-5 + 5r) + -4(r + -8) = 0
(-5 * 3 + 5r * 3) + -4(r + -8) = 0
(-15 + 15r) + -4(r + -8) = 0

Reorder the terms:
-15 + 15r + -4(-8 + r) = 0
-15 + 15r + (-8 * -4 + r * -4) = 0
-15 + 15r + (32 + -4r) = 0

Reorder the terms:
-15 + 32 + 15r + -4r = 0

Combine like terms: -15 + 32 = 17
17 + 15r + -4r = 0

Combine like terms: 15r + -4r = 11r
17 + 11r = 0

Solving
17 + 11r = 0

Solving for variable 'r'.

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

Add '-17' to each side of the equation.
17 + -17 + 11r = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 11r = 0 + -17
11r = 0 + -17

Combine like terms: 0 + -17 = -17
11r = -17

Divide each side by '11'.
r = -1.545454545

Simplifying
r = -1.545454545

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