Answer:
x=1.3
Step-by-step explanation:
theres multiple ways to solve a system of equations. my favorite is substitution. basically u make one of the variables by himself represent a value that has the other variable in it
3x + 4y = 7.1
2x+y=3.40
Im gonna use the second equation because the y is already all by himself.
3x+4y=7.1
y=3.40-2x
Then u substitute for the y in the other equation to find the price of the burger :)
3x+4(3.40-2x)=7.1
3x+13.6-8x=7.1
13.6-5x=7.1
-5x=-6.5
x=1.3
