Solving Equations

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

• x = 1
• x = 2
• x = 3
• x = 4

Solve:

• 165
• 17
• 1/17
• 1/165

Solve for x:
8x - 10 = -34

• 4
• 3
• -3
• -24

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5
• Subtract 5
• Multiply by 7
• Subtract 7

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -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

2x = x + 3

• 6
• 3
• 2
• x

2x = -8

• x = -4
• x = 4
• x = -10
• x = 6

x - 4 = 14

• x = 10
• x = -10
• x = 18
• x = -18

5 = 5x

• x = 5
• no solution
• x is all real numbers
• x = 1