SOLUTION: a+b=7
b+c=9
a+c=8
What is the value of abc?
a+b+b+c= 7+8
a+2b+c= 15
a+c = 15-2b and a+c=8
so 8= 15-2b
8-15 = -2b
-7/-2 = b
therefore b= 3.5 is this on the right
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-> SOLUTION: a+b=7
b+c=9
a+c=8
What is the value of abc?
a+b+b+c= 7+8
a+2b+c= 15
a+c = 15-2b and a+c=8
so 8= 15-2b
8-15 = -2b
-7/-2 = b
therefore b= 3.5 is this on the right
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Question 665449: a+b=7
b+c=9
a+c=8
What is the value of abc?
a+b+b+c= 7+8
a+2b+c= 15
a+c = 15-2b and a+c=8
so 8= 15-2b
8-15 = -2b
-7/-2 = b
therefore b= 3.5 is this on the right track please?
You can put this solution on YOUR website! a+b=7
b+c=9
a+c=8
a+b=7
b+c=9
subtract
a-c= -2
we have a+c=8
add the two
2a=6
a=3
if a=3 , a+b=7 so b=4
if b=4 , b+c=9 so c=5
a=3,b=4,c=5
