Question

2 − + 3 = 0; 3 − 7 + 10 = 0. by substitution method​

Answer 1

Step-by-step explanation:

2x−y+3=0...(1)

3x−7y+10=0....(2)

Let us use elimination method to solve the given system of equations.

Find the value of y from equation (1) and substitute the value in (2).

From (1)

−y=−3−2x⇒y=2x+3

And

3x−7(2x+3)=−10⇒3x−14x−21=−10

−11x=−10+21=11⇒x=

−11

11

=−1

and y=2x+3

y=2(−1)+3=−2+3=1

y=1

Answer : x=−1 and y=1