Answer:
31/x
Step-by-step explanation:
im assuming thats a 7*
2x+4 -3x -15=-2x+4
-1x-11=-2x+4
-11=-1x +4
-15=-1x
15=c
Answer:
5/6
Step-by-step explanation:
9514 1404 393
Answer:
375 hamburgers
Step-by-step explanation:
Let h represent the number of hamburgers. Then h+63 is the number of cheeseburgers, and the combined total is ...
h +(h +63) = 813
2h = 813 -63 = 750
h = 750/2 = 375
375 hamburgers were sold on Saturday.
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<em>Additional comment</em>
In a "sum and difference" problem like this, the smaller number is half the difference between the sum and the difference. h = (813 -63)/2 = 375. This generic solution applies to all "sum and difference" problems.