solve by substitution method:
9x+7y=-24
x=19-8y
what is the solution of systems

Question

anonymous · Answer

substitute 19 - 8y on the variable x of the first equation. so, it will look like this:

9(19-8y) + 7y = -24

then, you can solve for y now.

anonymous · Answer

$$9(19-8y)+7y=-24$$ etc

anonymous · Answer

what awesome one said. now you have one equation with one unknown

anonymous · Answer

I couldn't solve it

anonymous · Answer

ok multiply out using distributive law

anonymous · Answer

$$38-72y+7y=-24$$
collect like terms
$$38-65y=-24$$

anonymous · Answer

subtract 38
$$-65y=-62$$
divide 
$$y=\frac{62}{65}$$

anonymous · Answer

i made a mistake

anonymous · Answer

$$
9(19-8y) + 7y = -24

$$

anonymous · Answer

$$171-65y=-24$$
$$-65y=-24-171=-195$$
$$y=\frac{-195}{-65}=3$$

anonymous · Answer

now since y = 3 substitute back in equation 2 to get $$x=19-8\times 3=-5$$

anonymous · Answer

so satellite73 the solution ordered pair is (-5,3) correct

anonymous · Answer

so satellite73 the solution ordered pair is (-5,3) correct

anonymous · Answer

yes that is it

anonymous · Answer

thanks again