    Question

# For two simultaeous linear equations with two variables, say x and y, arrange the given steps in proper order to find solution of the equations using substitution. Step a: Solve the 2nd equation to find y. Step b: Substitute the value of y in one of the given equations to obtain the value of x. Step c: Inject/ substitute x in the 2nd equation to make it a linear equation in one variable. Step d: In 1st equation, solve for x in terms of y.

A
abcd
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B
dcab
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Solution

## The correct option is B d→c→a→bTwo linear equations with two variables, x and y, we proceed as per the following steps. Step 1: Solve for x in terms of y. Step 2: Inject/ substitute this x in the 2nd equation to make it a linear equation in one variable. Step 3: Solve the 2nd equation to find y. Step 4: Substitute the value of y in one of the given equations to obtain the value of x. For example, let's solve the below two equations. x+y=4 x−y=2 From the 1st equation, x=4−y Substituting this in the 2nd equation we get, 4−y−y=2 ⇒−2y=2−4 ⇒−2y=−2 ⇒y=1 Substituting this in the 1st equation we get, x=4−1=3 ∴(3,1) is the solution of the linear equations.  Suggest Corrections  0    Join BYJU'S Learning Program
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