X + 2x + 3 + 3 = 3(x + 2)

Step-by-step explanation:

x + 2x + 3 + 3 = 3(x + 2)

Do the distributive property

x + 2x + 3 + 3 = 3 * x + 3 * 2

x + 2x + 3 + 3 = 3x + 6

Combine like terms

3x + 6 = 3x + 6

Subtract 6 on both sides

3x + 6 - 6 = 3x + 6 - 6

3x = 3x

As you can see, they are the same...which means

Any value of  x  makes the equation true.  All real numbers

1, 2, 3 , 4 etc

Any value u put into the equation to represent "x" will be true...

EX:

3x = 3x

( if x were 7 we substitute that)

3(7) = 3 (7)

21 = 21 CORRECT

They will be the same answer/ have the same value.

Hope this helped!

Have a day!

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204