Asked by Nathan

Which equation can you use to find the value of b?

A.7+b+4=15

B. 1+5+b=15

C. b=2+4+15
Answered by Dean
11-14=b
15-6=b
6-15=b.

Do the problems, :)
Answered by MathMate
All of A, B and C.
I'll solve one of them as an example.

A.7+b+4=15
subtract 7 and 4 from each side
7-7 + b + 4 - 4 = 15 -7 -4
0 + b + 0 = 4
b=4
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