Question

Question 28

The solution of the equation 3x +7 = - 20 is ___ .

Answer 1

Answer : - 9

Solution:

Given, $3x+7=-20$

Subtracting 7 from both sides of the equation, we get

$3x+7-7=-20-7$

$\Rightarrow 3x=-27$

Dividing both sides of this equation by 3, we get

$\Rightarrow \frac{3x}{3}=\frac{-27}{3}$

$\Rightarrow x=-9$