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eimsori [14]
2 years ago
13

M minutes less than 80 minutes is 15 minutes

Mathematics
2 answers:
Tomtit [17]2 years ago
7 0

"80 minutes" . . . . . . . . . . . . . .            80

"M minutes less" . . . . . . . . . . .            80 - M

"... is  5 minutes" . . . . . . . . .                80 - M   =  15

Add 'M' to each side . . . . . . .              80          =  15 + M 

Subtract  15  from each side               80 - 15  =  M

Do the subtraction on the left side:     65          =  M
vesna_86 [32]2 years ago
5 0
In this problem we know that total minutes are 80 and
80 - M = 15
let's solve by steps 

Step 1 - adding M on both sides
80 - M + M = 15 + M
80 = 15 + M

Step 2 - subtract 15 from both sides
80 -  15 = 15 - 15 + M
65 = M

So, 80 - 65 = 15 
Hence verified.

Hope this helps you :)
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