Question

Tìm số nguyên x

a)(17 + x) - (352 - 400) = -32

b) -5 - (24 -2.x) = -11

Answer 1

`(17+x)-(352-400)=-32`

`17+x-352+400=-32`

`x=-32-17+352-400`

`x=-97`

 

`-5-(24-2xx x)=-11`

`-5-24+2x=-11`

`2x=-11+5+24`

`2x=18`

`x=9`

Answer 2

\(a,\left(17+x\right)-\left(352-400\right)=-32\)

\(\Rightarrow17+x+48=-32\)

\(\Rightarrow17+x=-80\)

\(\Rightarrow x=-97\)

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\(b,-5-\left(24-2x\right)=-11\)

\(\Rightarrow-5-24+2x=-11\)

\(\Rightarrow-29+2x=-11\)

\(\Rightarrow2x=-40\)

\(\Rightarrow x=-20\)

Answer 3

\(a,\left(17+x\right)-\left(352-400\right)=-32\\ \left(17+x\right)-\left(-48\right)=-32\\ 17+x=-32-48\\ 17+x=16\\ x=-80-17\\ x=-97\\ b,-5-\left(24-2.x\right)=-11\\ 24-2.x=-5-\left(-11\right)\\ 24-2.x=6\\ 2.x=24-6\\ 2.x=18\\ x=18:2\\ x=9\)