What is a solution to the system of equation
3x-4y=22
-9x+4y=38

X=-10 and y=-13

And the reason is that I cancelled the -4y and +4y so if the the sings are different you add if they are the same you subtract here I want to cancel the y so I add in order to cancel them out Which gets rid of it. Now I’m adding 3x to -9x Which equals -6x and when u add 22 and the 38 it equals 60 now you would have

-6x=60

Divide 60 by -6

=-10

So x is -10

To work out y u gonna have to substitute in any equation I chose the first one because it’s positive so

3x-4y=22

3x-10-4y=22

-30-4y=22

Add 30 to both sides.

-4y=52

Divide by -4

Y=-13

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1