Answer:
18/4
Step-by-step explanation: in order to get an equivalent ration just multiply both numerator and denominator by the same number
in this case I multiplied by 2 and got 18/4
Answer:
See Explanation
Step-by-step explanation:
5/4 = 1.25
1.25 / 4 = 0.3125 (this step separated the whole thing into quarters)

Tony should use 5/16 of the salt.
Answer:
2a+11b
Step-by-step explanation:
Need like terms!
3a-a
=2a
7b+4b
=11b