Answer:
x+y=5a
5a is added to b which is the sum of x and y multiplied by 3. That is, b=x+y×3=5a×3=15a
Since, 5a is added to b= 5a+15a=20a,
Answer:
3x + 4 ≤ 13
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
Using proportion

Answer:b
Step-by-step explanation:
Let think the answer is 4*2+5*-7=-27