Answer:
x = 12/7
Step-by-step explanation:
in order to solve this formula x/4 + x/3 = 1
<u>solutio</u>n
x/4 + x/3 = 1
the first step to do is to take lcm of the left hand side
[3(x) + 4(x)] /12 = 1
[4x +3x]/ 12 = 1
7x/12 = 1
cross multiply
7x/12 = 1
7x = 12 × 1
7x = 12
divide both sides by 7
7x/7 = 12/7
x = 12/7
Just add the 2 numbers and you have your answer
Answer:
7/2
Step-by-step explanation:
12x=4(x+2)+20
12x=4x+8+20
12x-4x=8+20
8x=28
x=28/8
simplify
x=7/2
Answer: B, $78
Step-by-step explanation:
If the tip is 20% of the dinner cost, then we have to first find what is 20% of 65.
20% x 65 = 13. So the tip for the dinner is 13 dollars.
Now we have to add it to the original dinner cost.
65 + 13 = 78.
Therefore, the total cost of their meal is 78 dollars. So the answer is B, $78!
