Question

Find the value of y in the equation 2x+y=7, ifx=2, find x if y=1

Answer 1

according to the question :
(i) find y if x = 2
2x + y  = 7
2 multiplied by 2 + y = 7
4 + y = 7
y = 7 - 4 (because 4 is transposed to RHS to LHS)
y = 3
therefore the value of y is 3

(ii) find the value of x if
y = 1
2x + y = 7
2x + 1 = 7
2x = 7 -1 (1 is transposed to LHS to RHS)
2x = 6
x= 6 ÷ 2
x = 3 
therefore the value of  is 3

Answer 2

Answer:

Answer is 3

Step-by-step explanation:

according to the question :

(i) find y if x = 2

2x + y  = 7

2 multiplied by 2 + y = 7

4 + y = 7

y = 7 - 4 (because 4 is transposed to RHS to LHS)

y = 3

therefore the value of y is 3

(ii) find the value of x if

y = 1

2x + y = 7

2x + 1 = 7

2x = 7 -1 (1 is transposed to LHS to RHS)

2x = 6

x= 6 / 2

x = 3

therefore the value of  is 3