Question

tìm x

a.3:x-10=-12

b.x:(-5)+10=-60

c.(2-x):(-4)-5=-11

giúp mình gấp nhé

Answer 1

\(b)\)\(x\div\left(-5\right)+10=-60\)

\(x\div\left(-5\right)=-60-10\)

\(x\div\left(-5\right)=-70\)

\(x=-70\times\left(-5\right)\)

\(x=350\)

Answer 2

\(a)\)\(3\div x-10=-12\)

\(3\div x=-12+10\)

\(3\div x=-2\)

\(x=3\div-2\)

\(x=-\frac{3}{2}=-1,5\)

Answer 3

\(\left(2-x\right)\div\left(-4\right)-5=-11\)

\(\left(2-x\right)\div\left(-9\right)=-11\)

\(\left(2-x\right)=-11\times\left(-9\right)\)

\(2-x=99\)

\(x=2-99\)

\(x=-97\)