10xy+2y+8x+7
Explanation
3xy + 4xy + 3xy = 10xy
The others cant be simplified so
10xy + 2y + 8x + 7
Step 1. You need x isolated.

<em>When you move a number from the left to right (and its addition or subtraction, the sign stays (< ≤ > and ≥ is signs).
</em><em>x<20 or in words, x is less than 20, and cannot be 20.</em>
Answer:
Ok so the answer is 13.7
Step-by-step explanation:
1. x/3 = 74/100
solve the equation above and get 3.7
2. the problem say a 10% tip so add that to 3.7. this equals 13.7
ANSWER: 13.7