a = –7
Solution:
Given expression is
![$\frac{a+4}{3} -\frac{a}{7} =\frac{a+7}{5} $](https://tex.z-dn.net/?f=%24%5Cfrac%7Ba%2B4%7D%7B3%7D%20-%5Cfrac%7Ba%7D%7B7%7D%20%3D%5Cfrac%7Ba%2B7%7D%7B5%7D%20%24)
Combine like terms together, we get
![$\frac{a+4}{3} -\frac{a}{7} -\frac{a+7}{5}=0 $](https://tex.z-dn.net/?f=%24%5Cfrac%7Ba%2B4%7D%7B3%7D%20-%5Cfrac%7Ba%7D%7B7%7D%20-%5Cfrac%7Ba%2B7%7D%7B5%7D%3D0%20%24)
Take LCM for the denominators (LCM of 3, 7, 5 = 105) to make it same.
![$\frac{(a+4)\times35}{3\times35} -\frac{a\times15}{7\times15} -\frac{(a+7)\times21}{5\times21}=0 $](https://tex.z-dn.net/?f=%24%5Cfrac%7B%28a%2B4%29%5Ctimes35%7D%7B3%5Ctimes35%7D%20-%5Cfrac%7Ba%5Ctimes15%7D%7B7%5Ctimes15%7D%20-%5Cfrac%7B%28a%2B7%29%5Ctimes21%7D%7B5%5Ctimes21%7D%3D0%20%24)
![$\frac{3a+140}{105} -\frac{15a}{105} -\frac{21a+147}{105} =0$](https://tex.z-dn.net/?f=%24%5Cfrac%7B3a%2B140%7D%7B105%7D%20-%5Cfrac%7B15a%7D%7B105%7D%20-%5Cfrac%7B21a%2B147%7D%7B105%7D%20%3D0%24)
![$\frac{3a+140+15a-21a-147}{105} =0$](https://tex.z-dn.net/?f=%24%5Cfrac%7B3a%2B140%2B15a-21a-147%7D%7B105%7D%20%3D0%24)
![$\frac{3a+15a-21a+140-147}{105} =0$](https://tex.z-dn.net/?f=%24%5Cfrac%7B3a%2B15a-21a%2B140-147%7D%7B105%7D%20%3D0%24)
![$\frac{-a-7}{105} =0$](https://tex.z-dn.net/?f=%24%5Cfrac%7B-a-7%7D%7B105%7D%20%3D0%24)
Do cross multiplication.
(Any number multiplied by 0 gives 0)
![-a=7](https://tex.z-dn.net/?f=-a%3D7)
Multiply (–1) on both sides to get the positive a.
a = –7
Hence, the answer is a = –7.
To turn a percent to a decimal you divide by 100, so 5.25 / 100 is .0525
Answer:
40 is the answer
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
C) x=1.5
Step-by-step explanation:
Hope This Helps!