Question

Find the value of a and b
which 2a-b = 30​

Answer 1

Answer:

Answer is 15............

Answer 2

Answer:

a+b = 180

so, a = 180 - b

now substitute it in the given expression.

180- b - 2b = 30!

180-3b = 30

180-30 = 3b

150 = 3b

50= b.

Therefore, a-2b = 30

a - 2 ( 50) = 30

a- 100= 30

a = 130.

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