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32:8+3x(60+8x(360:a-72:4)]=712

Răspuns :

Renatemambouko
32:8+3x[(60+8x(360:a-72:4)]=712
4+3x[(60+8x(360:a-18)]=712
3x[(60+8x(360:a-18)]=712 -4
3x[(60+8x(360:a-18)]=708
(60+8x(360:a-18)=708:3
60+8x(360:a-18)=236
8x(360:a-18)=236-60
8x(360:a-18)=176
360:a-18=176:8
360:a-18=22
360:a=40
a=360/40
a=9






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