Answer:
1. y= -1/4
Step-by-step explanation:
y/5 + 3/10 = (y+2)/7
Get a common denominator for the left hand side
2y/10 + 3/10 = (y+2)/7
(2y+3)/10 = (y+2)/7
Using cross products
(2y+3) *7 = 10*(y+2)
Distribute
14y+21 = 10y+20
Subtract 10y from each side
14y-10y +21 = 10y-10y+20
4y+21 =20
Subtract 21 from each side
4y+21-21 = 20-21
4y = -1
Divide by 4
4y/4 = -1/4
y = -1/4
Answer:
(-2,-4)
Step-by-step explanation:
The given system is
Add both equations to eliminate y
Simplify both sides to get:
Divide both sides by 2
Put x=-2 into one of the equations say, x+y=-6 and solve for y
The solution is (-2,-4)
Answer:
-4.16
Step-by-step explanation:
we have
----> a mixed number
Remember that
A mixed number is a combination of a whole number and a fraction
so
The greatest common factor would be 3 as 15/3 = 5 and 27/3 = 7, cannot get simpler than that!!