Question

solve :2×+y=7 and ×+y=5​

Answer 1

Answer:

Hi friends

Step-by-step explanation:

2x+y=7

-2*x+y=5

2x+y=7

-2x-2y=-10

-y=-3

y=3

x+3=5

x=2

Answer 2

Answer:

2×+y=7... eq 1

×+y=5​.. eq 2

subtract eq. 2 from eq. 1

(2x-x) + (y-y) = 7-5

x=2

put x=2 in any of the equations

so, for example in eq 2,

2+y=5

y=5-2

y=3

Step-by-step explanation:

Before subtracting the idea is to the coefficient of both both the x's or both the y's in the question, here the coefficient of y's in both the equation is same so we subtract directly and solve