Question

5x +3y =12 and 2x -y = 7. find x and y​

Answer 1

Answer:

1st one.

5x + 3y = 12

sorry but it can't be solved

we need atleast the value of x or y...

while. adding or subtracting

the variables must be same... variables are the letters in the equation

Answer 2

1️⃣-----5x +3y =12

2️⃣×3--2x -y = 7

________

by elimination method ,

11x = 33

x = 33/11

x = 3

sub\: x =3 in 1️⃣

5(3) +3y = 12

15 + 3y = 12

3y = 12 -15

y = -3/3

y = -1