Question 966770
3P+4C=40
5P+2C=34 MULTIPLY BY -2 & ADD.

3P-4C=40
-10P-4C=-68
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-7P=-28
P=-28/-7
P=$4.00 COST PER BAG OF POTATOES.
3*4+4C=40
12+4C=40
4C=40-12
4C=28
C=28/4
C=$7.00 PER CASE OF CORN
PROOF:
5*4+2*7=34
20+14=34
34=34