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Sagot :
Answer:
6 months, i used the equation from part a so i know it’s right
Step-by-step explanation:
a) 15 + 12x = 87
b) 12x = 87-15=72
72/12 = 6
Answer:
A.12x=87
B.12x=87
12x/12=x
87-15=72
72/12=6
X=6months
Check:
12*6=72+15=87
87=87
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