21=5m-7+4

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Solution for 21=5m-7+4 equation:


Simplifying
21 = 5m + -7 + 4

Reorder the terms:
21 = -7 + 4 + 5m

Combine like terms: -7 + 4 = -3
21 = -3 + 5m

Solving
21 = -3 + 5m

Solving for variable 'm'.

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

Add '-5m' to each side of the equation.
21 + -5m = -3 + 5m + -5m

Combine like terms: 5m + -5m = 0
21 + -5m = -3 + 0
21 + -5m = -3

Add '-21' to each side of the equation.
21 + -21 + -5m = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -5m = -3 + -21
-5m = -3 + -21

Combine like terms: -3 + -21 = -24
-5m = -24

Divide each side by '-5'.
m = 4.8

Simplifying
m = 4.8

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