3x + 8(x + 9) = -5
3x + 8x + 72 = -5
11x + 72 = -5
11x + 72 - 72 = -5 - 72
11x = -77
11x/11 = -77/11
x = -7
All you have to do for this equation is to substitute the y in the second equation with what y equals to. Then you distribute and combine like-terms.
To solve the equation:
![\frac{u - 3}{4} = 4 \\ \frac{u - 3}{4} \times 4 = 4 \times 4\\ u - 3 = 4 \times 4 \\ u - 3 + 3 = 16 + 3 \\ u = 16 + 3 \\ u = 19](https://tex.z-dn.net/?f=%5Cfrac%7Bu%20-%203%7D%7B4%7D%20%20%3D%204%20%5C%5C%20%5Cfrac%7Bu%20-%203%7D%7B4%7D%20%20%5Ctimes%204%20%3D%204%20%20%5Ctimes%204%5C%5C%20u%20-%203%20%3D%204%20%5Ctimes%204%20%5C%5C%20u%20-%203%20%2B%203%20%3D%2016%20%2B%203%20%5C%5C%20u%20%3D%2016%20%2B%203%20%5C%5C%20u%20%3D%2019)
Therefore, the answer is u=19.
Hope it helps!
Answer:
0.35
Step-by-step explanation:
it's just 4.20÷12=0.35
Step-by-step explanation:
add 8,15,11,10,11,6,7 then the answer you get divide by 7