4(r-90)+4r=3000

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Solution for 4(r-90)+4r=3000 equation:


Simplifying
4(r + -90) + 4r = 3000

Reorder the terms:
4(-90 + r) + 4r = 3000
(-90 * 4 + r * 4) + 4r = 3000
(-360 + 4r) + 4r = 3000

Combine like terms: 4r + 4r = 8r
-360 + 8r = 3000

Solving
-360 + 8r = 3000

Solving for variable 'r'.

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

Add '360' to each side of the equation.
-360 + 360 + 8r = 3000 + 360

Combine like terms: -360 + 360 = 0
0 + 8r = 3000 + 360
8r = 3000 + 360

Combine like terms: 3000 + 360 = 3360
8r = 3360

Divide each side by '8'.
r = 420

Simplifying
r = 420

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