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4 years ago

How do I solve this for a and b? 7/b-36=a/72=28/b

Mathematics

2 answers:

Kamila [148]4 years ago

4 0

7/(b-36)=28/b
28b-1008=7b
21b=1008
b=48
a/72=28/b
a=72x28/48
a=42

zmey [24]4 years ago

3 0

Answer:

a=-3456

b=-21/36

Step-by-step explanation:

(7/b)-36=(28/b)

(7/b)-(28/b)=36

7-28=36b

-21=36b

-21/36=b

Since you found one variable substitute it in to find the other variable

28/b=a/72

28/(-21/36)=a/72

28 * (36/-21)=a/72

-48=a/72

72* -48 = a

a=-3456

b=-21/36

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