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14. What is the first step to solve the equation: 8x – 3 = 21?
A. Subtract 3 from both sides B. Add three to both sides C. Divide by 8 D. Multiply by 8
15. Which of the following is equivalent to: 2(x+4) = 12?
A. 2x+4=12 C. 2x+8=12
16. 4a – 8 = 28
17. 5x – 2x = 15
18. 3(-4x + 7) = 57
19. 19 – 8x = x – 17
20. 5 + x÷8 = -4
B. 2x+8=24 D. 2x+6=12