4=7(r-3)

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Solution for 4=7(r-3) equation:


Simplifying
4 = 7(r + -3)

Reorder the terms:
4 = 7(-3 + r)
4 = (-3 * 7 + r * 7)
4 = (-21 + 7r)

Solving
4 = -21 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
4 + -7r = -21 + 7r + -7r

Combine like terms: 7r + -7r = 0
4 + -7r = -21 + 0
4 + -7r = -21

Add '-4' to each side of the equation.
4 + -4 + -7r = -21 + -4

Combine like terms: 4 + -4 = 0
0 + -7r = -21 + -4
-7r = -21 + -4

Combine like terms: -21 + -4 = -25
-7r = -25

Divide each side by '-7'.
r = 3.571428571

Simplifying
r = 3.571428571

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