a) x + x + x + x + x = 350
=>5x=350 =>x=70
b ) x + x + x + x + x + x = 90 000
=>6x=90 000 =>x=15 000
a) x + x + x + x + x = 350
\(\Rightarrow5x=350\)
\(\Rightarrow x=70\)
Vậy x = 70
b ) x + x + x + x + x + x = 90 000
\(\Rightarrow6x=90000\)
\(\Rightarrow x=15000\)
Vậy x= 15000
a)x+x+x+x+x=350
\(\Rightarrow\)x.5=350
\(\Rightarrow\)x=350:5
\(\Rightarrow\)x=70.
b)x+x+x+x+x+x=90000
\(\Rightarrow\)x.6=90000
\(\Rightarrow\)x=90000:6
\(\Rightarrow\)x=15000