Question

Which expression is equivalent to 4+x+x+2x+5+3+x?

Answer 1

Answer:

B. 5x + 12.

Step-by-step explanation:

$4 + x + x + 2x + 5 + 3 + x = ?$

Whenever you see variables without a visible coefficient, imagine there is a '1' in front of the variable.

$4 +(1)x+(1)x+2x+5+3+(1)x=?$

From here, you can combine like terms.

Remember, combine means to add.

Like terms are terms whose variables (such as x or y) with any exponents are the same (such as x² or y²).

$(1)x+(1)x+2x+(1)x=5x.$

$4+5+3=12.$

$4+(1)x+(1)x+2x+5+3+(1)x=5x+12.$

I, therefore believe 5x + 12 is equal to 4 + x + x + 2x + 5 + 3 + x.

Answer 2

$\longrightarrow{\blue{B.\:5x\:+\:12}}$ 

$\large\mathfrak{{\pmb{\underline{\purple{Step-by-step\:explanation}}{\purple{:}}}}}$

$4 + x + x + 2x + 5 + 3 + x$

Combining like terms, we have

$= x + x + 2x + x + 4 + 5 + 3$

Next, add them

$= 5x + 12$

Therefore, ''$\sf\pink{4 + x + x + 2x + 5 + 3 + x}$" is equivalent to "$\sf\purple{5x\:+\:12}$."

$\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35}}}}}$