\(-39-x=-76\)
\(\Leftrightarrow-x=-37\)
\(\Leftrightarrow x=37\)
b) \(-39-x=23-21\)
\(\Leftrightarrow-39-x=2\)
\(\Leftrightarrow x=-37\)
a,\(\left(-39\right)-x=-76\)
\(\Leftrightarrow\left(-39\right)-\left(-76\right)=x\)
\(\Rightarrow x=37\)
Học tốt !
\(a,\)\(\left(-39\right)-x=-76\)
<=>\(x=\left(-39\right)+76\)
<=>\(x=37\)
\(b,-39-x=23-21\)
<=>\(-39-x=2\)
<=>\(x=-39-2\)
<=>\(x=-41\)
b,\(-39-x=23-21\)
\(\Leftrightarrow-39-x=2\)
\(\Leftrightarrow x=-39-2\)
\(\Leftrightarrow x=-41\)
Vậy x= -41
Trả lời:
\(a,\)\(\left(-39\right)-x=-76\)
\(\Leftrightarrow x=\left(-39\right)+76\)
\(\Leftrightarrow x=37\)
Vậy\(x=37\)
\(b,\)\(-39-x=23-21\)
\(\Leftrightarrow-39-x=2\)
\(\Leftrightarrow x=-39-2\)
\(\Leftrightarrow x=-41\)
Vậy\(x=-41\)
Hok tốt!
Vuong Dong Yet