Question 252334
3(m-2)+4-m=18  :given
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Multiply the first term to remove the parentheses...
3m -6 +4 -m = 18
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Collect terms
2m - 2 = 18
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Add 2 to both sides
2m = 20
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Divide both sides by 2
m = 10
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Check by substituting back into the original equation.
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3(m-2)+4-m=18
3(10-2)+4-10=??
3(8) +4 -10 = 24 + 4 -10 = 18  :TRUE:
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m = 10 is the answer.
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Done