X - shorter piece
3x - 2 - longer piece
x + 3x -2 = 18
x + 3x = 18 +2
4x = 20 | : 4
x=5
3*5 -2 = 15 - 2 = 13
shorter piece: 5 ft
longer piece : 13 ft
I hope this helps
X/x-3 + x/2 = 6x/2x-6
⇒ x/x-3 + x/2 = 3x/x-3
⇒ x/x-3 - 3x/x-3 = -x/2
⇒ -2x/x-3 = -x/2
Two cases:
1) x = 0
2) x ≠ 0
⇒ 2/x-3 = 1/2
⇒ x-3 = 4
⇒ x = 3+4 = 7
Solutions are: x= 0,7
Hope it helps!
Expanded Form:
40,000,000+4,000,000+80,000+700
So basically
what percent (x%) is (=) 88 (88) out of (88/) 106 (106)
x%=88/106
x%=0.83
percent means partst out of 100
x%=x/100
x/100=0.83
multiply both isdes by 100
x=83
83%
She will need to sell 18 necklaces a month to reach 1650
