Which step is wrong pls help

the second step and third step

Step-by-step explanation:

in the second step, you are supposed to move 5x to the left side

in the process of this, 5x should turn negative, and you should be subtracting it from 7x, not adding it.

so the +5x should be -5x

in the third step you should divide, but when you divide 6 by 12, you should get 0.5, not 2.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!