-(-3-x+8)-(-3+5)=3 -48(6x-12)=0 -120+(50+x)=-45 (-2)^2(x+17-33)-5=55

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1. `#Dark`

   `-(-3-x+8)-(-3+5)=3`

   `⇒3+x-8+3-5=3`

   `⇒x=-3+8-3+5+3`

   `⇒x=10`

   Vậy `x=10`

   `-48(6x-12)=0`

   `⇒6x-12=0`

   `⇒6x=12`

   `⇒x=2`

   Vậy `x=2`

   `-120+(50+x)=-45`

   `⇒x=120-50-45`

   `⇒x=25`

   Vậy `x=25`

   `(-2)².(x+17-33)-5=55`

   `⇒4.(x-16)=55+5=60`

   `⇒x-16=60:4=25`

   `⇒x=15+16=31`

   Vậy `x=31`

   Trả lời

2. Đáp án:

   Giải thích các bước giải:

   `a)-(-3-x+8)-(-3+5)=3`

   `->3+x-8+3-5=3`

   `->x-7=3`

   `->x=3+7`

   `->x=10`

   Vậy `x=10`

   `b)-48(6x-12)=0`

   `->6x-12=0`

   `->6x=12`

   `->x=12:6`

   `->x=2`

   Vậy `x=2`

   `c)-120+(50+x)=-45`

   `->-120+50+x=-45`

   `->x-70=-45`

   `->x=-45+70`

   `->x=25`

   Vậy `x=25`

   `d)(-2)^2 (x+17-33)-5=55`

   `->4.(x-16)=55+5`

   `->4(x-16)=60`

   `->x-16=60:4`

   `->x-16=15`

   `->x=15+16`

   `->x=31`

   Vậy `x=31`

   Trả lời