Question

Solve the pair of linear equations:
a + b = 10
a - b = 9​

Answer 1

Answer:

take a+b=10 equation 1

a-b=9 equation 2

then,

solving equations 1 and 2

a+b=10

a-b=9

(+)

______

2a=19

=>a=19/2=9.5

now,

putting the value of a in equation 1

therefore,a+b=10

=>9.5+b=10

=>b=10-9.5=0.5

so, a=9.5

b=0.5

Step-by-step explanation:

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