7/3 + 3 (2/3 - 1/3)^2

20/9

Step-by-step explanation:

Not sure what you need, but here is that simplified as much as possible:

(given) 7/3 + 3 (2/3 - 1/3)^2

(subtract) 7/3 + 3 (1/3)^2

(square) 7/3 + 3 (1/9)

(mixed number to improper fraction) 7/3 + 38/9

(changing 7/3 into 1/9s) 7/3 = 21/9

(expression) 21/9 + 38/9

(adding) 40/9

(simplify) 20/9

step-by-step explanation:

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!