Question

resolva as equaçoes, em U= Q A) 2-a/10+a-5/8 = -1/2

Answer 1

2-a/10 + a-5/8 = -1/2
mmc (10,8,2) = 40

8-4a/40 + 5a-25/40 = -20/40
8-4a+5a-25 = -20
a -17 = -20
a = -3