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Mathematics 21 Online
OpenStudy (anonymous):

can someone help?

OpenStudy (boldjon):

with?

OpenStudy (anonymous):

solve for x: −2(x + 3) = −2(x + 1) − 4. I need help, not the answer please

OpenStudy (mehek.15):

do you know how to distribute?

OpenStudy (anonymous):

no ;-;

OpenStudy (mehek.15):

|dw:1451951600494:dw| multiply the number on the outside with everything in the parenthesis so -2 * x = -2 * 3 =

OpenStudy (anonymous):

I don't understand? is it 6?

OpenStudy (anonymous):

-2 x 3 + 6?

OpenStudy (anonymous):

=*

OpenStudy (mehek.15):

-2 * x = -2x -2 * 3 = -6 not +6

OpenStudy (anonymous):

oh. okay

OpenStudy (mehek.15):

negative * negative = positive positive * positive = positive negative * positive = negative

OpenStudy (anonymous):

:) so what's the next step?

OpenStudy (mehek.15):

well we got one side -2x -6 = -2(x+1)-4 now distribute on other side -2(x+1) -2 * x = -2 * 1 =

OpenStudy (anonymous):

-2?

OpenStudy (mehek.15):

-2 * x = -2x -2 * 1 = -2 -2x - 6 = -2x - 2 - 4 -2 - 4 = ?

OpenStudy (anonymous):

-2

OpenStudy (anonymous):

right?

OpenStudy (mehek.15):

no -2 - 4 is the same as 2 + 4 but with a negative sign in the answer -2 - 4 = -6

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

alright

OpenStudy (mehek.15):

-2x - 6 = - 2x - 6

OpenStudy (mehek.15):

both sides are exactly the same notice that?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

do i add 6 to each side now? so I can get the x alone

OpenStudy (mehek.15):

so that means the solution is infinite meaning you can put any value for `x` since both sides are the same

OpenStudy (mehek.15):

@summerr no need to get x alone because both sides are the same so when you solve, it's going to be 0 = 0

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