Question

\(x+30\%.x=-1,3\)

Answer 1

x+30%×x=−1,3

x+0,3x=−1,3

(1+0,3)x=−1,3

1,3x=−1,3

x=−1,3÷1,3

x=−1

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Answer 2

\(x+30\%\times x=-1,3\)

\(x+0,3x=-1,3\)

\(\left(1+0,3\right)x=-1,3\)

\(1,3x=-1,3\)

\(x=-1,3\div1,3\)

\(x=-1\)

Vậy x = -1