John spends $112 total. he buys 11 items total. staplers are $7 and 3 hole punches are $12. how many of each did he purchase?

Let x=staplers and y=hole punches.

We have:

x+y=11

7x+12y=112

7x+7y=77

5y=35

y=7

x+7=11

x=4

Therefore, he bought 4 staplers and 7 hole punches.

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: