Answer:
1 19/75
Step-by-step explanation:
Turn 6 4/15 into an improper fraction= 94/15
Dividing a fraction is multiplying it by its reciprocal
94/15*1/5= 94/75
Last turn the improper fraction into a mixed number= 1 19/75
Answer:
x = 12z + 1 and y = 10z - 1
Step-by-step explanation:
To solve the system of equations, we can use the substitution method
If we call
3x - 4y + 4z = 7 I
x - y - 2z = 2 II
2x - 3y + 6z = 5 III
Clearing II x = 2 + y + 2z
Now, replacing II in III
2(2 + y + 2z) - 3y +6z = 5
4 + 2y + 4z - 3y + 6z = 5
10z - y = 1 from here y = 10z - 1
Finally, replacing y in I
3x - 4(10z - 1) + 4z = 7
3x -40z + 4 + 4z = 7
3x - 36z = 3
3x = 36z + 3
x = 12z + 1
Done
Answer:
x = -7
Step-by-step explanation:
-2x - 10 = 4
-2x = 14 | Add 10 to both sides
x = -7 | Divide both sides by -2
Answer:
0
Step-by-step explanation:
First, in order to subtract these fractions, we need the denominators to be the same number.
4/8 x 2 = 8/16
1/2 x 8 = 8/16
8/16 - 8/16 = 0. The doctor does not need any Robitussin at all
