Question

Which of these equations has zero as the solution?
a) X + 4 = 7 -x b) 7x = 7 c) 2x + 3 = x -3 d) 2x + 1 = 1 + 3x

Answer 1

Answer:

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Answer 2

Answer:

Which of these equations has zero as the solution?

a) X + 4 = 7 -x

b) 7x = 7

c) 2x + 3 = x -3

d) 2x + 1 = 1 + 3x

Ans => d)2x + 1 = 1 + 3x

Step-by-step explanation:

A) x + 4 = 7 -x

$x + x = 7 - 4 \\ 2x = 3 \\ x = \frac{3}{2}$

b) 7x = 7

$x = \frac{7}{7 } \\ x = 1$

c) 2x + 3 = x -3

$2x - x = - 3 - 3 \\ x = - 6$

d) 2x + 1 = 1 + 3x

$2x - 3x = 1 - 1 \\ x = 0$