2(4r-9)-3(r+4)=

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Solution for 2(4r-9)-3(r+4)= equation:


Simplifying
2(4r + -9) + -3(r + 4) = 0

Reorder the terms:
2(-9 + 4r) + -3(r + 4) = 0
(-9 * 2 + 4r * 2) + -3(r + 4) = 0
(-18 + 8r) + -3(r + 4) = 0

Reorder the terms:
-18 + 8r + -3(4 + r) = 0
-18 + 8r + (4 * -3 + r * -3) = 0
-18 + 8r + (-12 + -3r) = 0

Reorder the terms:
-18 + -12 + 8r + -3r = 0

Combine like terms: -18 + -12 = -30
-30 + 8r + -3r = 0

Combine like terms: 8r + -3r = 5r
-30 + 5r = 0

Solving
-30 + 5r = 0

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + 5r = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 5r = 0 + 30
5r = 0 + 30

Combine like terms: 0 + 30 = 30
5r = 30

Divide each side by '5'.
r = 6

Simplifying
r = 6

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