Question

9x+3=3x+15
Please help it is full in the blank
Blank +3=15 and
Blank=blank

Answer 1

(1) 6x + 3 = 15

(2) x = 2

Explanation:

• We have the equation
  9x + 3 = 3x + 15

• Subtract 3x from both sides to get rid of the 3x on the right:
  9x - 3x + 3 = 3x - 3x + 15
  → 6x + 3 = 0 + 15
  ← 6x + 3 = 15
  
• Subtract 3 from both sides:
  6x + 3 - 3 = 15 - 3
  6x = 12
• Divide both sides by 6:
  6x/6 = 12/6
  → x = 2