Question

3^-1 x 9^-1 + 3^-2

pls answer

Answer 1

Answer:

Step-by-step explanation:

3^-1 x 9^-1 + 3^-2

Answer 2

Step-by-step explanation:

a + b = 5 a - b = 3

a= 3 + b

3 + b + b = 5

3 + 2b = 5

2b = 2

b = 1

then a = 3 + b

a = 3 + 1

a = 4

therefore a = 4 and b = 1