Answer:
it's 
Step-by-step explanation:
Answer:
C. -24
Step-by-step explanation:
(x+6)= -18
Subtract 6 from each side
x+6-6 = -18-6
x = -24
Answer:
x=2/3
Step-by-step explanation:
25-(3x+5)=2(x+8)+x
25-3x-5=2x+16+x
20-3x=3x+16
20-3x-3x=16
20-6x=16
6x=20-16
6x=4
x=4/6
simplify
x=2/3
X is the short piece
(3•x-1)+x=31
4x=31+1
X=32/4=8
Short piece is 8
Long piece is 3•8-1=23
Check 8+23=31 ✔️