5,6z-2z-0,7z+2,65=7

Question

5,6z-2z-0,7z+2,65=7

Answer 1

5.6z-2z-0.7z+2.65=7

переносим 2,65

2,9z=7-2.65

2.9z=4.35

z=4.35:2,9

z=1.5

 

Answer 2

(5,6z-2z-0.7z)+2.65 = 7 2,9z= 7 - 2,65 2,9z = 4.35 z = 1.5