Question

15 +3x=21 find the value of x​

Answer 1

Step-by-step explanation:

$15 + 3x = 21$

$3x = 21 - 15$

$3x = 6$

$x = \frac{6}{3}$

$x = 2$

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Answer 2

Answer:

We get the value of x$=2$

Step-by-step explanation:

As per the data in given equation

In above question it is given that

We have find the value of given expression

Given the data in question 15 +3x=21

We have find the value of x in above equation

Here we will use the transposition method

As we get,

$15+3x=21$

Subtracting both side by 15 we get,

$15+3x-15=21-15$

Simplifying further we get,

$3x=6$

Divide both side by 3 we get,

$\frac{3x}{3} =\frac{6}{3} \\x=2$

Hence we get the value of x$=2$