Help me pls :( i don’t understand

x=30

Step-by-step explanation:

u need to find y and there's some rule which says it should be 90

so u do 60+90 and take that away from 180 as it is a triangle, which is 30

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.