4x-5y=-2

3y-x=-3

4x+5y=-2

4y-x=11

3x-6y=5

2y=4x-6

2x+y=9

2x-5x=15

3y-x=0

x-4y=-2

3(y-1)=2(x-3)

3y-2x=-2.25

y=3x

y=3x+1

Alkana and Hsu together earn $84,326 per year. If Alkana earns $12,468 more per year than HSU, then how much does each of them earn per year?

Mrs Brighton invested $30,000 and received a total of $2,300 in interest. If she invested part of the money at 10% and the remainder at 5%, then how much did she invest at each rate?

Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipts were $824 and twice as many adult tickects as students tickects were sold, then how many of each were sold?

3x+4y+-5

5x+6y+-1

2x=2-y

3x+y=-1

5x-y=1

10x-2y=2

x/4-y/3=-4

x/8+y/6=0

3/7x+5/9y=27

1/9x+2/7y=7

what is the question on all this? The algebratic equations are useless without some explainations.