4[r-80]=76

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Solution for 4[r-80]=76 equation:


Simplifying
4[r + -80] = 76

Reorder the terms:
4[-80 + r] = 76
[-80 * 4 + r * 4] = 76
[-320 + 4r] = 76

Solving
-320 + 4r = 76

Solving for variable 'r'.

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

Add '320' to each side of the equation.
-320 + 320 + 4r = 76 + 320

Combine like terms: -320 + 320 = 0
0 + 4r = 76 + 320
4r = 76 + 320

Combine like terms: 76 + 320 = 396
4r = 396

Divide each side by '4'.
r = 99

Simplifying
r = 99

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