2M+0.5(M-4)=9

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Solution for 2M+0.5(M-4)=9 equation: 


Simplifying
2M + 0.5(M + -4) = 9

Reorder the terms:
2M + 0.5(-4 + M) = 9
2M + (-4 * 0.5 + M * 0.5) = 9
2M + (-2 + 0.5M) = 9

Reorder the terms:
-2 + 2M + 0.5M = 9

Combine like terms: 2M + 0.5M = 2.5M
-2 + 2.5M = 9

Solving
-2 + 2.5M = 9

Solving for variable 'M'.

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

Add '2' to each side of the equation.
-2 + 2 + 2.5M = 9 + 2

Combine like terms: -2 + 2 = 0
0 + 2.5M = 9 + 2
2.5M = 9 + 2

Combine like terms: 9 + 2 = 11
2.5M = 11

Divide each side by '2.5'.
M = 4.4

Simplifying
M = 4.4

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