4 x + 30 = 5x + 20
-5x -5x
-x + 30 = 20
-30 -30
- x = -10
x = 10
Answer:
a
Step-by-step explanation:
23 can round to 20 and 21 can also round to 20 so all u do is 20x20=400 so 400 is your estimated answer
Top Right: 1 3/4 divided by 1/10
Answer: -9
Step-by-step explanation:
(6+3)÷(4-5)
Since 6+3 is 9 and 4-5 = -1
You do 9 divided by -1. It equals -9.
It is -9 since a positive divided by a negative number.