Answer:
One number that works is 1.
Step-by-step explanation:
(1-2)(1+7)
-1(1+7)
-1*8
-8
Answer:
each of his parents are 42 years old.
Step-by-step explanation:
30 and 13
x-y=17 and x+y=43
x=17+y and x=43-y, so 17+y=43-y
so y=13
43-13=30, so x=30 and y=13
Answer:
x=2
Step-by-step explanation:
5(x-5)=3(x-7)
Distribute
5x-25 = 3x-21
subtract 3x from each side
5x-25-3x = 3x-21-3x
2x-25 = -21
Add 25 to each side
2x-25+25 = -21 +25
2x=4
Divide by 2
2x/2 =4/2
x=2
Answer:
yes it's a solution. I think. I don't really know this
