Answer:
y=-7; x=3
Step-by-step explanation:
You can substitute equation 2 into equation 1:
4(y+4)-2y=2
Then solve
4y+16-2y=2
2y+16=2
2y=-14
y=-7
x=-7+4
x=-3
Answer:
x=-11.9
Step-by-step explanation:
100-37.5 = 72.5% of the marbles were not green
Answer:
5a^2 + 7a
Step-by-step explanation:
Combine like terms
Answer:
b = 10.5
Step-by-step explanation:
2(b-9) = 3
then:
2*b + 2*-9 = 3
2b - 18 = 3
2b = 3 + 18
2b = 21
b = 21/2
b = 10.5
check:
2(10.5 - 9) = 3
2*1.5 = 3
