Question

I think of a number add 3 to it and multiply the result by 7.

write the follwing algebraci\lly using the unknown numbera as x

Answer 1

Let x be the number you choose. Then add 3 to this number.

You have x + 3.

Now multiply 7 to this.

So you should have 7(x+3) as your algebraic expression.

Answer 2

x+3(7)=the answer

21=x

Explanation: