You can start by multiplying the first equation by twelve, by doing this you get whole numbers. This yields:
4x + 3y =12
2x - 3y = -30
As you can see, you have two terms that only differ in sign.
By adding both equations together you get this:
6x=-18 or x=-3
The reason why you can add these equations together is illustrated in the next example:
4=x
5=y
4+5=x+y
Simple no?
Now that you now x you can substitute the value in one of the equations and you get the y value:
4*-3 + 3y =12
-12 + 3y =12
3y= 24
y=8
I believe the answer is 8♀️
Answer:
$600
Step-by-step explanation:
$450 which is 75% of the original price
75%=3/4
$450=3/4op
$450/ 3/4 =op
$450*4/3=op
$450/3=150*4=$600
Answer:
x =1/625 or 0.0016
Step-by-step explanation:
i am smart
Answer:
Third option is the right choice.
Step-by-step explanation:
y = -4x + 11 (Slope = m = -4)
3 = -4(2) + 11
3 = -8 + 11
3 = 3
True.
