Consider an equation,
$3 x + 4 = 7 x - 8$ .
Which of the following can be the first step(s) to be followed to solve the equation?

3 x + 4 = 7 x - 8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 x + 4 - 7 x = - 8

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

4 = 7 x - 8 - 3 x

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

3 x - 7 x = - 8 + 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct options are
B $3 x + 4 - 7 x = - 8$
C $4 = 7 x - 8 - 3 x$
Given,
$3 x + 4 = 7 x - 8$ .

Subtracting $7 x$ from both sides, we get,

$3 x + 4 - 7 x = 7 x - 8 - 7 x$
$\Rightarrow 3 x + 4 - 7 x = - 8$

Or, subtracting $3 x$ from both sides, we get,

$3 x + 4 - 3 x = 7 x - 8 - 3 x$
$\Rightarrow 4 = 7 x - 8 - 3 x$

$∴$ Any of the above two steps can be the first step to solve the equation.

Suggest Corrections

Similar questions

5 x + 7 x - 4 x + 2 = 5

12 x - 4 x = 3

8 x = 3

x = 3 \times 8

y + 7 x = 3 x - 2 y + 28

\frac{x + 3}{8} = \frac{1}{4}

3 x^{2} + 7 x + 4 = 0

Join BYJU'S Learning Program