X-197=2945-197 y:89=1068:89 365а=63x365

Question

X-197=2945-197
y:89=1068:89
365а=63x365

Answer 1

x-197=2945-197

х=2945-197+197

х=2945

2945-197=2945-197

 

y:89=1068:89

у=1068:89*89

у=1068

1068:89=1068:89

 

365а=63*365

а=63*365:365

а=63

365*63=63*365

 

Answer 2

x - 197 = 2945 - 197

x = 2945 - 197 + 197

x = 2945

 

y/89 = 1068/89 (приравниваем)

y = 1068

 

365a = 63 · 365

365a = 22995

a = 63