* Select ALL the statements that are true for any value of x.
7x + (2x +7) = 9x + 7
7x + (2x - 1) = 9x + 1
5x - (8 - 6x) = -x -8
6x - (2x - 4) = 4x + 4

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!

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

on the middle line

step-by-step explanation:

1/5=50