Question

For an equation 2x + 3y = 1 if x=2 then y=? ​

Answer 1

Answer:

2x+3y=1

if x=2,

2.2+3y=1

=> 3y=1-4

=> 3y= -3

=> y= -3/3

=> y= -1

Answer 2

Answer:

Given:-

For an equation 2x + 3y = 1, if x = 2 then y = ?

To Find:-

The value of "y".

Note:-

●》For finding sum variable ( unknown value of number ), we need to rearrange the numbers from one side to another ( for calculations ) that time signs are also changed. For example - positive becomes negative; multiple becomes divisional.

●》Left hand side sum is always = Right hand side sum.

Solution:-

x = 2, y = ?

☆ Equation~

▪︎$2x + 3y = 1$

☆ Applying the value~

▪︎$2 × 2 + 3y = 1$

▪︎$4 + 3y = 1$

☆ According to note first point ( rearrangement )~

▪︎$3y = 1 - 4$

▪︎$3y = - 3$

▪︎$y = \frac{-3}{3}$

☆ After doing calculations~

▪︎$y = -1$

y = -1

Checking:-

♤ According to note second point ( L.H.S = R.H.S ), Let's check~

• $2x + 3y = 1 \ \ ?$

• $2 × 2 + 3 × -1 = 1 \ \ ?$

• $4 + ( - 3 ) = 1 \ \ ?$

♤ Positive × negative = negative~

• $4 - 3 = 1 \ \ ?$

• $1 = 1 \ \ ?$

♤ Yes!

Hence, proved that y = -1.

Answer:-

Hence, the value of y = -1.

:)