Solve the equations 4x+3y=-3 and 2x+y=-1?

Dec 10, 2016

Solution is $x = 0$ and $y = - 1$

Explanation:

We can use substitution method. From second equation $2 x + y = - 1$, we get $y = - 1 - 2 x$.

Now putting this in first equation $4 x + 3 y = - 3$, we get

$4 x + 3 \left(- 1 - 2 x\right) = - 3$

or $4 x - 3 - 6 x = - 3$

or $- 2 x = - 3 + 3 = 0$

i.e. $x = 0$ and

hence y=-1-2×0=-1

Solution is $x = 0$ and $y = - 1$