Question

I think of a number x , add 3 to it. The result is then multiplied by 2. The final result is 42. The algebraic expression for the statement is

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Answer 1

Answer:

x=18

Step-by-step explanation:

3 is added to x

= x+3

result is multiplied by 2

=2(x+3)

the result =42

2(x+3)=42

divide both sides with 2

2(x+3)/2=42/2

x+3=21

subtract both sides with 3

x+3-3=21-3

x=18

check

replace x value in previous equation..

we get,

2(x+3)=42

2(18+3)=42

36+6=42

42=42 HENCE PROVED

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