Question

5x+3=21 please tell answer ​

Answer 1

Answer:

   5x +3 =21

=  5x = 21-3

=  5x = 18

=   x = 18 ÷ 5

=   x = 3.6

Step-by-step explanation:

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Answer 2

• $\sf 5x+3=21$

• Subtracting both sides by 3

$\sf~~~~~\implies 5x+3 - 3=21 - 3$

$\sf~~~~~\implies 5x=18$

• Dividing both sides by 5

$\sf~~~~~\implies \dfrac{5x}{5} = \dfrac{18}{5}$

$\sf~~~~~\implies x = 3.6$