8 Math 1.1-1.3 Solve Equations Review

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Solve: x + 3x - 2x = 12

• 2
• 6
• -2
• -6

2x - 3 + 4x = 27

• x= 12
• x = 4
• x = 5
• x = 15

2x + 3(5x - 7) = 47

• x = 1
• x = 2
• x = 3
• x = 4

5b + 3(b - 5) = 1

• 3/4

• -3/4

• 2

• -7/4

8v - 4(v + 8) = 8

• 2
• 10
• 4
• -4 

7x = 3x + 24

• 6
• 10
• 14
• 4

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

Solve for r

• 3
• -3
• 3.3
• 10

What is the solution to this equation?

• one solution
• no solution
• infinite solutions
• none of these