Solve the systems of linear equations using the substitution method

Question

12x=2y=7

y=x+5

Answer 1

Did yu mistype?, look like yu ment 12x+2y=7 for line 1

line 2:y=x+5

put this y intu line 1...12x+2*(x+5)=7

14x+10=7

14x=-3

x=-3/14

Answer 2

at a snack bar 3 pretzels and one can of soda cost $2.75  Two pretzels and one can of soda cost $2.00  Find the cost of a pretzel and the cost of one can of soda