8*(х - 1,4)=0,56
8x-11.2=0.56
8x=11.76
x=11.76/8
x=1.47
(4,6 - x)* 19=4,18
87.4-19x=4.18
-19x=4.18-87.4
x=83.22/19
x=4.38
(51,32+х)+0,12=72
x=72-0.12-51.32
x=20.56
17,28/(56-х)=36
17.28=36*(56-x)
17.28=2016-36x
36x=2016-17.28
36x=1998.72
x=1998.72/36
x=55.52
Пошаговое объяснение:
