Question

6. in the equation 2x + y = 7, find the values of (i) y if x = 2 and
(2) x if y = -1​

Answer 1

Answer:

(i) y=3

(ii) x=7.5

Step-by-step explanation:

put the value of x given as , an equation

2(2)+y=7

y=3

and

put the value of y given as, an equation

2x+(-1)=7

x=7.5

Answer 2

SOLUTION :

2x + y = 7

(1) find value of y if x= 2

2(2) + y = 7

4 + y = 7

y = 7-4 = 3

y = 3

(2) find value of x if y = -1

2x + ( -1) = 7

2x = 7 - (-1)

2x = 8

x= 8/2

x= 4

HOPE IT HELPS YOU