Question

If x = a, y = b is the solution of the equations 3x – y = 12 and x + 3y = 14, then the valuesof a and b are, respectively

1 point

(A) 3 and 5

(B) 5 and 3

(C) 3 and 1

(D) –1 and –3​

Answer 1

Answer:

(B) 5 and 3

Step-by-step explanation:

Put x = a = 5

Put y = b = 3

Equation. 1     3(5) - 3 = 12

                       15 - 3 = 12

                       12   =  12

Equation 2.     x + 3y = 14

                       5 + 3(3) = 14

                       5 + 9    =  14

                            14    =   14

Therefore, value of  a = 5, b = 3