Answer: SO if you hv to solve for x then the answer is 4/13. And if you wanna solve for y then the answer is 4.
Step-by-step explanation: solve for x=
13x+y=4
13x+0=4
x=4/13
Solve for y=
13(0)+y=4
y=4
P: Parenthesis
E: Equation
M:Multiplication
D: Division
A : addition
S: Subtraction
So first you need to divide because it is before so you divide 18 by 6 which is 3 then you subtract (31 - 3) which gives you 28
answer : 28