Someone plz help me with all plz

Step-by-step explanation:

A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a/b or {\displaystyle {\tfrac {a}{b}}}  

b

a

, where a and b are both integers. As with other fractions, the denominator (b) cannot be zero. Examples include {\displaystyle {\tfrac {1}{2}}}  

2

1

, {\displaystyle -{\tfrac {8}{5}}}−  

5

8

, {\displaystyle {\tfrac {-8}{5}}}  

5

−8

, and {\displaystyle {\tfrac {8}{-5}}}  

−5

8

.

47 - 90 = 43

43 - 180 = x

x = 137