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2 years ago

Use Substitution to solve the system of equations. c+b=12 2b-3c=1 1/2

1 answer:

7 0

C = -b + 12
2b - 3c = 1 1/2

2b -3(-b+12) = 1 1/2
2b + 3b -36 = 1 1/2
5b = 37 1/2
b = 37.5/5
b = 7.5

c + 7.5 = 12
c = 4.5

b = 7.5 c = 4.5

Hope this helps :)

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