3(r-2)-1=4(r-4)

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Solution for 3(r-2)-1=4(r-4) equation:


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

Reorder the terms:
3(-2 + r) + -1 = 4(r + -4)
(-2 * 3 + r * 3) + -1 = 4(r + -4)
(-6 + 3r) + -1 = 4(r + -4)

Reorder the terms:
-6 + -1 + 3r = 4(r + -4)

Combine like terms: -6 + -1 = -7
-7 + 3r = 4(r + -4)

Reorder the terms:
-7 + 3r = 4(-4 + r)
-7 + 3r = (-4 * 4 + r * 4)
-7 + 3r = (-16 + 4r)

Solving
-7 + 3r = -16 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
-7 + 3r + -4r = -16 + 4r + -4r

Combine like terms: 3r + -4r = -1r
-7 + -1r = -16 + 4r + -4r

Combine like terms: 4r + -4r = 0
-7 + -1r = -16 + 0
-7 + -1r = -16

Add '7' to each side of the equation.
-7 + 7 + -1r = -16 + 7

Combine like terms: -7 + 7 = 0
0 + -1r = -16 + 7
-1r = -16 + 7

Combine like terms: -16 + 7 = -9
-1r = -9

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

Simplifying
r = 9

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