Question

Tìm số nguyên x biết:

1, -x +(-53) =(-42) - 41

2. -12 - x= -32 +19

3.453+x = -443+(-199)

4. -12-x = -32 +19

5. 32.(-2) +x = -120 -5.(-85)

6. -2x + 15.(-4) = 21.(-8) -12

Answer 1

a)\(-x+\left(-53\right)=\left(-42\right)-41\Rightarrow-x+\left(-53\right)=\left(-83\right)\Rightarrow x=\left(-83\right)-\left(-53\right)=-30\)b) \(-12-x=-32+19\Rightarrow-12-x=-13\Rightarrow x=12--13=25\)c)\(453+x=-443+-199\Rightarrow453+x=-562\Rightarrow x=-562-453=-1015\)d)(đề trùng b mk ko làm nha)

e) \(32.\left(-2\right)+x=-120-5.\left(-85\right)\Rightarrow-64+x=545\Rightarrow x=545--64=609\)g)

\(-2x+15.\left(-4\right)=21.\left(-8\right)-12\Rightarrow-2x+-60=-180\Rightarrow2x=-120\Rightarrow x=-60\)