Wes has only quarters and dimes in his pocket if he has 18 coins for a total of $2.25 how many dimes and quarters does he have

The answer is he has 3 quarters and 15 dimes

Step-by-step explanation:

quarter= $.25 and dime= $.1 so 3x.25= .75 and 15x.1= 1.5 and then add and you get $2.25

3 quarters, 15 dimes

Step-by-step explanation:

1st)

.10D+.25Q=2.25

D+Q=18

2nd)

.10D+.25Q=2.25

-.10(D+Q=18) = (-.10D-.10Q=-1.8)

3rd)

(.10D+.25Q=2.25) + (-.10D-.10Q=-1.8)

Equals to

.15Q=.45

4th)

.15Q/.15Q=.45/.15Q

Equals to

Q=3

Which means there is 3 quarters

5th)

18(total number of coins) - 3(quarters) = 15(dimes)

(Answer)

37

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.