Question

Solve the system by substitution. -4.5-2y=-12.5 , 3.35x-y=-0.75

Answer 1

First, we solve for y in the first equation:
$-2y = -12.5 +4.5$
$-2y=-8$
$y= \frac{8}{2}$
$y=4$
Then, we substitute the y value in the other equation and solve for x:
$3.35x-(4)=-0.75$
$3.35x=-0.75+4$
$3.35x=3.25$
$x= \frac{3.25}{3.35}$
$x= \frac{65}{67}$

Answer 2

so -2y=-12.5+4.5 thus -2y=-8 thus y=4 if y=4 than 3.35x=-.75+4 thus 3.35x=3.25 thus x=3.35/3.25