Question

How do you solve the system 9a+2b=10 and 9a−2b=10?

Answer 1

Answer:

Step-by-step explanation:

9a+2b=10

9a-2b=10

(+)

18a=20

a=20/18=10/9

Substituting a value in 9a+2b=10

9x10/9+2b=10

10+2b=10

10-10+2b=0+2b

2b=0

b=0/2=0

The values are a=10/9 & b= 0.

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