a. 7x+12=-37
7x=-49
x=-7
____________
b.(-350):(x-5)+40=-30
(-350):(x-5)=-70
x-5=5
x=10
`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`
\(b)(-350):(x-5)+40=-30\)
\((-350):(x-5)=-70\)
\(x-5=5\)
\(x=10\)
a) \(7x+12=-37\)
\(7x=-49\)
\(x=-7\)
b) \(\left(-350\right):\left(x-5\right)+40=-30\)
\(\left(-350\right):\left(x-5\right)=-70\)
\(x-5=5\)
\(x=10\)