Answer:
x=.8 y=6.6
Step-by-step explanation:
To solve this equation, we must solve for 1 variable and insert it in the other equation.
Since the first equation shows that y=-2x-5, we can insert that in place of y in the second equation.
-2x+4(-2x+5)=12.
Now, use the distributive property.
-2x-8x+20=12
Now subtract the variables.
-10x+20=12
Now subtract on both sides.
-10x=-8.
Now we can divide -8 by -10 to isolate x.
x=.8
Now we can substitute what we got for x in place of the equation that is equal to y.
y=-2(.8)-5
y=-1.6-5
y=-6.6
Hope this helps!
