Question

Solve the simultaneous equations x + 2y = 5; y = - 2x - 2 graphically.
following suhauestions :​

Answer 1

Answer:

×=5-2y , we will send 2y on RHS

In eq. seacond we will put value of x

y=-2(5-2y)-2

y=-10+4y-2

y=-12+4y

12=4y-y

12=3y

y=12÷3

y=4

put value of y in eq. 1

x=5-2×4

x=5-8

x=-3

hence, x = -3 , y= 4

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