X-y=3=>x=3+y
X+2y=-6
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3+y+2y=-6
3+3y=-6
3y=-6-3
3y=-9
y=-3
X+2y=-6
X+2(-3)=-6
X-6=-6
X=0
Answer:
B C E
Step-by-step explanation:
trust me... its too hard to explain
Multiply 14 to each term: 14a+70+84b
80/100 x 30 = 24 because you just multiply percents
