Solve by substitution

(1). Y = -3x + 5 (2). 2x – 3y = -1

-2x – 3y = -7 y = -5x – 17

An equation where variables are used to represent known values—function notation true or false

Math i have no idea how to do a and b

Angie has saved 3/8 of the amount she needs to buy a bike. clive has saved 7/10 of the amount he needs to buy a skateboard. what is the difference between clive's and angie's fraction of savings?