Solve this system of equations using substitution.

a + b + c = 180

b = 3a

c = 5a

What Does B Equal?

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1 Answer

Solve this system of equations using substitution.
a + b + c = 180
b = 3a
c = 5a
What Does B Equal?

a + 3a + 5a = 180
9a = 180
a = 20

b = 3 * 20 = 60    <<<<<<<<<<<<<<<<

c = 5 * 20 = 100

20 + 60 + 100 = 180

by Level 11 User (78.4k points)

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