Question

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

Answer 1

To solve :

• the value of y in the equation 2x + y = 7, if x =2. and x if y = 1

Solution :

First we'll find the value of Y where x = 2

So , the equation is → 2x + y = 7

★ Substituting the value of x

• 2 × 2 + y = 7
• 4 + y = 7
• y = 7 - 4
• y = 3

Hence , the value of Y is 3

Now , finding the value of X where Y = 1

the equation is → 2x + y = 7

★ Substituting the value of y

• 2x + 1 = 7
• 2x = 7 - 1
• 2x = 6
• x = 3

Hence , the value of x is 3