<u><em>Answer:</em></u>
y = 23
<u><em>Step-by-step explanation:</em></u>
Add the numbers:
18 + 5 - y
= 23 - y
Rearrange terms:
y = 23
13 + 21 = 13- -21
The minus sign and negative cancel each other out.
(x+5)*7=133
7x+35=133
7x=98
x=98/7
x=14
Answer:
17
Step-by-step explanation:
Work backwards from your instructions
36/9 = 4
4 + 13 = 17