Question

Tìm x a) 7x+12=-37 b) (-350) :(x-5) +40=-30

Answer 1

a. 7x+12=-37

7x=-49

x=-7

____________

b.(-350):(x-5)+40=-30

(-350):(x-5)=-70

x-5=5

x=10

Answer 2

\(a)7x+12=-37\)
\(7x=-49\)
\(x=-7\)
 

Answer 3

`7x+12=-37`

`=>7x=-37 -12`

`=>7x= -49`

`=>x=-49 :7`

`=>x=-7`

`--------`

`(-350) :(x-5) +40=-30`

`=> (-350) :(x-5)=-30-40`

`=> (-350) :(x-5)=-70`

`=>x-5= -350 :(-70)`

`=>x-5=5`

`=>x=5+ 5`

`=>x=10`

Answer 4

\(b)(-350):(x-5)+40=-30\)
\((-350):(x-5)=-70\)
\(x-5=5\)
\(x=10\)

Answer 5

a)  \(7x+12=-37\)

      \(7x=-49\)

     \(x=-7\)

b)  \(\left(-350\right):\left(x-5\right)+40=-30\)

     \(\left(-350\right):\left(x-5\right)=-70\)

     \(x-5=5\)

     \(x=10\)