Answer:
4(3x-10)
Step-by-step explanation:
12x-40 = (4*3)x-(4*10) = 4(3x-10). The GCF is 4.
Answer:
- v = 8
- x = -12
Step-by-step explanation:
1. I like to work with positive numbers, so the first thing I'd do is multiply the equation by -1.
2v + 7 = 23
2v = 16 . . . . . subtract 7
v = 8 . . . . . . . divide by 2
<em>Check</em>
-2(8) -7 = -23 . . . . true
___
2. (x/4) -5 = -8
x/4 = -3 . . . . . . . add 5
x = -12 . . . . . . . . multiply by 4
<em>Check</em>
(-12/4) -5 = -8 . . . . true
3/10 divided by 4/5
You can solve this problem by changing the second fraction and multiplying. 3/10 times 5/4 is 15/40 = 3/8
Dividing by 5 is equivalent to dividing by 10 and then multiplying by 2.
therefore:
63.5/5 = (63.5/10) * 2 = 6.35 * 2 =12.70 which rounds to 13.
