Simplify 13x - 4[x + (3 - x)

Question

nikato · Answer

have you tried distributing and then combining like terms?

anonymous · Answer

yes just keep getting the wrong answer everytime

nikato · Answer

ok. can you show me your work?
and i can check where you went wrong

anonymous · Answer

13x - 4[x + (3 - x)
13x-4[3x-2x)
13x-12x-8x
this is all i keep getting and it doesnt ,make any sense:/

anonymous · Answer

Solve (x + 5 < 4) ∩ (x - 3 > -6). could you also help me with this

nikato · Answer

ok, but lets do one problem at a time.

you messed up on your first step

anonymous · Answer

instead of 2x would it be x^2?

nikato · Answer

13x - 4[x + (3 - x)
13x-4(x+3-x)
distribute the 4 
13x-4x-12+4x         remember -4x+4x=0
13x-12

anonymous · Answer

ohh okay i see now! thank you!

nikato · Answer

ok.
and for you other problem

(x + 5 < 4)    and    (x - 3 > -6)
can you solve for x for both these inequalities?

anonymous · Answer

i dont believe soo

nikato · Answer

x+5<4
how would you isolate the x on the left side

anonymous · Answer

subtract 5 and add to the 4 to x<5+4 
which would make it x<9?

nikato · Answer

no. you would just subtract 5 on both sdies and thats it.

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got it?
can you try witht he other equation?