Multpiply first equation by 3 and second by 5 to clear nasty faractions
-13x-6y=21
15x+2y=25
now see which ones we can clear
we can clear y
multiply second equation by 3 and add to the first equation
-13x-6y=21
<u>45x+6y=75 +</u>
32x+0y=96
32x=96
divide both sides by 32
x=3
sub back
15x+2y=25
15(3)+2y=25
45+2y=25
minus 45 from both sides
2y=-20
divide both sides by 2
y=-10
x=3
y=-10
(3,-10)
Answer:
x=8
Step-by-step explanation:
5(3x-4)-6x=3(3x-4)
First, remove the brackets that's,
15x-20-6x=9x-12
Then collect like terms that's,
15x-6x-9x= -12+20
that's,
9x-9x=8
Therefore,
x=8
Answer:
12:26
Step-by-step explanation:
$100
$300/3 days = $100/1 day
