Answer:
y= 27
Step-by-step explanation:
12-y= -15
subtract 12 from both sides
12-12. -15-12
-y= -27
divide both sides by -y (or -1)
-y÷ -y. -27÷ -y
y= 27
Answer: 35
Step-by-step explanation:
If y=7 then substitute 7 for "y" and then multiply 5*7 which gives you 35.
16. 9
Since each side are congruent, you set the two sides to each other
7x-12=3x
Subtract 7x from both sides
-12=-4x
Divide -4 from both sides
3=x
3+3+3=9
18. 28
2x-3=3x-10
Add 10 on both sides
2x+7=3x
Subtract 2x on both sides
7=x
7+7+7+7=28
Answer:
the answer is b hope you have fun
The first piece is 20ft. The second piece is 40ft and the third piece is 60ft.