Quiz 1.1

3+4x+5x=21

• x=4
• x=-18
• x=2
• x=10

2(4x-9)=-5+7x

• x = -13

• x = -4/3

• x = 4/3

• x = 13

 $\frac{1}{4}\left(4-x\right)=10+2x$  

• x = -4

• x = 4

• x = -3

• x = 3

Solve:

^{-3x - 6(1 + x) = 2x + 27}

• x = -3

• x=3

• x=11

• x = -11

Solve.
3| −8x| + 8 = 80

• {-7/3, 7/3}
• {-3,3}
• {11/3,-11/3}
• No Solution

∣ 2x + 9 ∣ = 15

• x = 3  
  x = 6
• x = 3
  x = -6
• x = 3
  x = -12
• x = 6
  x = -12

|b-8|+10>22

• -4<b<20
• b<-4 or b>20
• 20<b<-4
• b=-4 or b=20