1. 3x+3y=15
-3y = -3y (subtract 3y from both sides)
3x = 15-3y
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3 = 3 3 (divide each number by 3)
x = 5- y
Answer:
1.11,1.23,2.13, 3.12
Step-by-step explanation:
I think it would be 300, because 15% of x=45, so .15x=45, x= 45/.15=300
Number 2. x=5/3 and y=5
number 4. x=7/3 and y=-5
that's all i could answer. and for number 1 x=-3
18 times 4 = 72
Both started with 72 Martha sold more
