(10m + 3) - (4m -2)
Firstly, use the negative sign to open the parenthesis
(10m + 3) -1 x 4m -1 x (-2)
minus x minus = plus
(10m + 3) -4m + 2
10m + 3 - 4m + 2
Collect the like terms
10m - 4m + 3 + 2
m(10-4) + 5
m(6) + 5
6m + 5
The answer is OPTION B
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