Question

4m plus 9 plus five m minus 12 equal 42

Answer 1

4m + 9 + 5m - 12 = 42

4m + 5m = 42 - 9 + 12

9m = 45

m = 45/9

m = 5

Answer 2

4m + 9 + 5m - 12 = 42

9m - 3 = 42
+3 +3
9m = 45
/9 /9

m = 5