Answer:
Step-by-step explanation:
0.01x−0.3y=1;y=0.1x−2
Rewrite equations:
y=0.1x−2;0.01x−0.3y=1
Step: Solvey=0.1x−2for y:
y=0.1x−2
Step: Substitute0.1x−2foryin0.01x−0.3y=1:
0.01x−0.3y=1
0.01x−0.3(0.1x−2)=1
−0.02x+0.6=1(Simplify both sides of the equation)
−0.02x+0.6+−0.6=1+−0.6(Add -0.6 to both sides)
−0.02x=0.4
−0.02x
−0.02
=
0.4
−0.02
(Divide both sides by -0.02)
x=−20
Step: Substitute−20forxiny=0.1x−2:
y=0.1x−2
y=(0.1)(−20)−2
y=−4(Simplify both sides of the equation)
Answer:
x=−20 and y=−4
