Answer:
b. 5x + 14 – 4x = 23 + x – 9
Explanation:
a. In solving the equation we get,
12 + 4x = 6x + 10 – 2x
⇒ 4x + 12 - 10 - 4x = 0
⇒ 2 = 0
which is not true.
Thus, it has No solution.
b. 5x + 14 – 4x = 23 + x – 9
⇒ x + 14 - 14 - x = 0
⇒ 0 = 0
which is true thus it has infinite number of solution.
c. x + 9 – 0.8x = 5.2x + 17 – 8
⇒ -5.4x = 0
⇒ x = 0
Since this equation has solution thus has Single Solution.
d. 4x – 2x = 20
⇒ 2x = 20
⇒ x = 10
Since this equation has solution thus has Single Solution.