Question

(10,49-х):4,02=0,805
и
9*к-8,67*к=0,6699

Answer 1

10,49-х=0,805*4,02
10,49-х=3,2361
х=10,49-3,2361
х=7,2539

0,33к=0,6699
к=0,6699/0,33
к=2,03