Realize as seg. operaçoes e aplique lei de signo a) -2(-5)-10-5(-3)+3(5)
b) 4(-5)-3(-2)-5+7
c) 3(3-2(5))+4
d) 5(8-2(3))+2(-3)
e) 25(-2)+10(3-2)
f) 15(8(-2)-5+21)
g) (3(-1)+3)(2-8)
b) 4(-5)-3(-2)-5+7
c) 3(3-2(5))+4
d) 5(8-2(3))+2(-3)
e) 25(-2)+10(3-2)
f) 15(8(-2)-5+21)
g) (3(-1)+3)(2-8)
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