Answer:
1400
Step-by-step explanation:
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15m + 5m + 12m
20m+12m
=4mx(5+3)
122
12 times 2 times 5 plus 2 gets rewritten as
(12)(2)(5) + 2
Follow PEMDAS and do multiplication first. From left to right...
24(5) + 2 { (12)(2) = 24 }
120 + 2 { (24)(5) = 120 }
122 { 120 + 2 = 122 }
Please see attachment