Laura goes shopping. she spends one-fourth of her money on a pair of shorts, and one-third of her remaining money on a belt. if laura has $42 left after these two purchases,, how much money did she have left when she started shopping

answer:

30

we formulate the equation 3/5x=18, as she spend 2/5, and so 18 is the 3/5 she has left. now with 3/5x=18, we multiply each side by 5/3, leaving x=18*5/3, and that gives us 30

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -