X - (-7) = -10
x + 7 = -10
x = -10 - 7
x = -17
Answer:
60
Step-by-step explanation:
To check: half of 60 is 30, if 10 people leave that's 20, one third of 60 is 60/3 which = 20
Answer:
There will be four parts
Step-by-step explanation:
lets say there are three green balloons and one yellow balloons. The ratio will be 3:1
Answer:
12
Step-by-step explanation:
6 ÷ 1/2 = 6 × 2 = 12