Answer:
x = 15/2
Step-by-step explanation:
Solve for x:
4 x + 12 = 42
Subtract 12 from both sides:
4 x + (12 - 12) = 42 - 12
12 - 12 = 0:
4 x = 42 - 12
42 - 12 = 30:
4 x = 30
Divide both sides of 4 x = 30 by 4:
(4 x)/4 = 30/4
4/4 = 1:
x = 30/4
The gcd of 30 and 4 is 2, so 30/4 = (2×15)/(2×2) = 2/2×15/2 = 15/2:
Answer: x = 15/2
