7/10 because you divide by 10
Y = x + 5....so we sub in x + 5 for y in the other equation
4x + y = 20
4x + x + 5 = 20
5x + 5 = 20
5x = 20 - 5
5x = 15
x = 15/5
x = 3
y = x + 5
y = 3 + 5
y = 8
solution is (3,8)
Either you can use distributive property or you can add up the numbers in the brackets.
Hopefully that helped! :)
You simply divide, since it's a fraction. If you divide 14 b7 25, you get an answer of 0.56. :)