Question

find the value of a if x = -a and y=5/2 is a solution of the equation x+4y-7=0

Answer 1

Hey mate thank for the question
x=-a, y=5/2
x+4y=7
Putting the value of x and y
-a+4(5/2)=7
-a+20/2=7
-2a+20=14
-14+20=2a
6=2a
a=6/2
a=3

Answer 2

Answer:

a=3 hope it help you mark as brainlist