Question

if x=7 and y=5 is the solution of 3x+at=31 the value of a is ______.
A) 21
B) 21
C) 57
D) 52​

Answer 1

Answer:

ans:-a)21 this is the right answer

Answer 2

Answer:

Is there at or ay??

if ay then—

3×7+a×5=31

21+5a=31

5a=31-21

a=10/5

a=2