Question

Решите уравнение пжжжжпжжжпжжжпжпжпжпж:200*(x+71)=54000;900*(16-c)=5400;400*(x-12)=3600

Answer 1

200*(x+71)=54000
х+71=54000:200
х+71=270
х=270-71
х=199

900*(16-c)=5400
16-с=5400:900
16-с=6
-с=6-16
-с=-10
с=10

400*(x-12)=3600
х-12=3600:400
х-12=9
х=9+12
х=21