Question

tìm x , biết :

(-15).8-(25.x)=(-7).12

Answer 1

(-15).8 - (25.x) = (-7).12

(-120) - 25x = -84

25x = -120 - (-84)

25x = -120 + 84

25x = -36

x = \(-\frac{36}{25}=-1,44\)

Answer 2

(15).8- ( 25.x) = (-7).12

-----> -120 - ( 25x) = -84

-----> 25x =  -120+84

------> 25x= -36

-------> x= -1.44

tk mk nha mk tk lại cho

Answer 3

\(\Leftrightarrow-120-25.x=-84\)

\(\Leftrightarrow-x=\left(-84+120\right):25\)

\(\Leftrightarrow-x=\frac{36}{25}\)

\(\Rightarrow x=\frac{-36}{25}=-1,44\)

Vậy \(x=-1,44\)