=5(r-2)+4(7+R)

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Solution for =5(r-2)+4(7+R) equation:


Simplifying
0 = 5(r + -2) + 4(7 + R)

Reorder the terms:
0 = 5(-2 + r) + 4(7 + R)
0 = (-2 * 5 + r * 5) + 4(7 + R)
0 = (-10 + 5r) + 4(7 + R)
0 = -10 + 5r + (7 * 4 + R * 4)
0 = -10 + 5r + (28 + 4R)

Reorder the terms:
0 = -10 + 28 + 4R + 5r

Combine like terms: -10 + 28 = 18
0 = 18 + 4R + 5r

Solving
0 = 18 + 4R + 5r

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.
0 + -4R = 18 + 4R + -4R + 5r
Remove the zero:
-4R = 18 + 4R + -4R + 5r

Combine like terms: 4R + -4R = 0
-4R = 18 + 0 + 5r
-4R = 18 + 5r

Divide each side by '-4'.
R = -4.5 + -1.25r

Simplifying
R = -4.5 + -1.25r

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