Răspunsuri

2014-09-25T17:29:55+03:00
(5a-32):4=17 
(5a-32)=17*4
5a-32=68
5a=68+32
5a=100
a=100/5
\boxed{a=20}
2014-09-25T17:32:57+03:00
(5a - 32) : 4 = 17 5a - 32 = 17 • 4 5a - 32 = 68 5a = 68 + 32 a = 100 : 5 a = 20