Javier solved the equation shown 8(9 + x) = 192
72 + x = 192
x = 120
Which mistake did Javier make in his calculations?

8 should be multiplied in the parenthesis

Step-by-step explanation:

8(9 + x) = 192

72 + 8x = 192

8x = 120

x = 4

Javier needs to distribute the 8 to the entire parenthesis expression.

Step-by-step explanation:

8(9+x) = 192

72+8x=192

8x=120

x=15

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

where is the diagram? shown below where? ?

step-by-step explanation: