a)
(-3)³+5x=-52
-27+5x=-52
5x=52+27
5x=79 /:5
x=15,8
(-3)³+5*15,8= -27+(5*15,8)= -27+79=52
b)
(8-y):(-8)= -6
(8-y)= -6+8
(8-y)= 2 /-8
y= -6
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a)
(-3)³+5x=-52
-27+5x=-52
5x=52+27
5x=79 /:5
x=15,8
(-3)³+5*15,8= -27+(5*15,8)= -27+79=52
b)
(8-y):(-8)= -6
(8-y)= -6+8
(8-y)= 2 /-8
y= -6