Question

Реши уравнеия з89 + ( х - 47 ) : 4 900 : а =180 : 4 ( х + 631) - 567 = 666 47 × х = 611

Answer 1

1) 389+(x-47)=819
389+x-47=819
x=477
2)900/a=180/4
4a=900*180
4a=162000
a=40500
3)(x+631)-567=666
x+631-567=666
x+64=666
x=602
4)47*x=611
x=611/47
x=13