31. +
34. -
To figure out more, just solve the known problem, and then go over what the answer would be to the unknown one until you find the answer that makes it true.
7= 16 + 3x
7-16 = 3x
-9 = 3x
x = (-9)/(3)
x = -3
Answer:7
Step-by-step explanation:
all you have to do is subtract 20-13
Answer:
need to spend $18 more in addition to $12
Step-by-step explanation:
Given: According to online music store, if you spend $30 or more, you receive 3 songs for free
To find: How much more money need to be spend in addition to $12 to receive three free songs
Solution:
Let x denotes amount to be spend in addition to $12 to receive three free songs
According to question,

Give me 8 mins i will answer in the comments