Answer:
1. r=5 2. x=2 3. x=-3 4. y=11 5. x=-11
Step-by-step explanation:
1. 7r-7=2r+18
combine
5r=25r
divide
r=5
5. 3(x-4)=5(x+2)
multiply
3x-12=5x+10
-2x=22
x=-11
H
I think it is b
x=2 : )
4(3x-1)=20
12x-4=20
12x=24
x=2
a. 473.15
b. C=K-273.15
C. 26.85