Question

Afla numerele necunoscute:

(b:10):9 =17 rest 17

100x(c:7+175:5)=6300

(240:10x37):d=7 rest 6

Answer 1

(b:10):9=17 rest 6

b:10=17×9+ 6

b:10=153+6

b=159×10

b=1590

(240:10x37):d=7 rest 6

24x37=7d+ 6

888=7d+6

7d=882

d=126

Explanation: