Question

if X=3 and y=2 is solution of a pair of linear equations ax-2y=8 and X+by=5 then the value of a-b__​

Answer 1

Step-by-step explanation:

X = 3

Y = 2

A equation

ax - 2y = 8

a × 3 - 2 × 2 = 8

3a - 4 = 8

3a = 8 + 4

3a = 12

a = 12 / 3

a = 4

B equation

x + by = 5

3 + b × 2 = 5

3 + 2b = 5

2b = 5 - 3

2b = 2

b = 2 / 2

b = 1

the value of a - b

a - b

4 - 1

3

your answer is 3

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hope u understand