2(5r-9)-4(4r+3)=

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Solution for 2(5r-9)-4(4r+3)= equation:


Simplifying
2(5r + -9) + -4(4r + 3) = 0

Reorder the terms:
2(-9 + 5r) + -4(4r + 3) = 0
(-9 * 2 + 5r * 2) + -4(4r + 3) = 0
(-18 + 10r) + -4(4r + 3) = 0

Reorder the terms:
-18 + 10r + -4(3 + 4r) = 0
-18 + 10r + (3 * -4 + 4r * -4) = 0
-18 + 10r + (-12 + -16r) = 0

Reorder the terms:
-18 + -12 + 10r + -16r = 0

Combine like terms: -18 + -12 = -30
-30 + 10r + -16r = 0

Combine like terms: 10r + -16r = -6r
-30 + -6r = 0

Solving
-30 + -6r = 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 + -6r = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -6r = 0 + 30
-6r = 0 + 30

Combine like terms: 0 + 30 = 30
-6r = 30

Divide each side by '-6'.
r = -5

Simplifying
r = -5

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