Answer:
x=-19/5
Step-by-step explanation:
-3x=2x+19
-3x-2x=19
-5x=19
x=19/-5
Answer:
get x to one side by subtracting 2x from 2x+19
new equation:
-3x-2x=19
-5x=19
divide both sides by -5
x=-19/5
or x=-3 4/5
Answer:
5 hours
Step-by-step explanation:
10*2=20
20 divided by 4 is equal to 5 so the answer is 5 hours
y = 3x + 2
y = 7x - 10
Answer:
x=3
y=11
Step-by-step explanation:
y = 3x + 2 equation 1
y = 7x - 10 equation 2
using equation 1 in equation 2 we have:
3x + 2 = 7x - 10
2=7x - 3x -10
2 = 4x -10
2+10 = 4x
12= 4x
12/4 = x
we have:
x= 3
using equation 1:
y = 3x + 2
y= 3(3)+2
y=9+2
y=11