Answer:
Step-by-step explanation:
2nd one
Answer:
two solutions
Step-by-step explanation:
it's a square equations and has two answers
Karim=4,8km,12km,16km Shawn=3,6km,9km,12km
Answer:
X =30/7
Step-by-step explanation:
The first way would be something like:
-7x + 10 = -20. The first thing we would do is to subtract 10 from both sides.
Therefore,
-7x+10-10=-20-10
Simplified, we get
-7x=-30
Remove the negative symbols
7x =30
x=30/7
Second example:
10=7x - 20
Add 20 to both sides.
10+20=7x-20+20
Simplified,
30=7x
x = 30/7