6/7 because 48 divided by 8 is 6 and 56 divided by 8 is 7
4x + 6 < -6
- 6 -6
4x < -6
— —
4 4
x < -1.5
Answer:
10pens
Step-by-step explanation:
23-3=20
20÷2=10
Answer:
31 children and 290 adults
Step-by-step explanation:
Let a = number of adults and c = number of children.
a + c = 321
2a + 1.75c = 634.25
Multiply both sides of the the first equation by -2 and add it to the second equation.
-2a - 2c = -642
(+) 2a + 1.75c = 634.25
--------------------------------------
-0.25c = -7.75
Divide both sides by -0.25
c = 31
Use the first equation to find a.
a + c = 321
Substitute 31 for c.
a + 31 = 321
Subtract 31 from both sides.
a = 290
Answer: 31 children and 290 adults
