Choose the correct one.
Which of the following equations cannot be formed using the equation x = 7 ?
(a) 2x + 1 =15 (b) 7x – 1 = 50
(c) x – 3 = 4 (d) x/7 – 1 = 0
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Choose the correct one.
Which of the following equations cannot be formed using the equation x = 7 ?
(a) 2x + 1 =15 (b) 7x – 1 = 50
(c) x – 3 = 4 (d) x/7 – 1 = 0
Choose the correct one.
Which of the following equations cannot be formed using the equation x = 7 ?
(a) 2x + 1 =15 (b) 7x – 1 = 50
(c) x – 3 = 4 (d) x/7 – 1 = 0
Correct option is (b) 7x – 1 = 50
We have, x = 7
On multiplying both the sides by 7, we get
7×x=7×7
7x = 49
On adding (-1) both the sides, we get
7x + (-1) = 49 + (-1)
7x – 1= 49 – 1
7x – 1 = 48
Correct answer is (b) 7x – 1 = 50