Respuesta:
1.
a) 30
b) -63
c) 40
d) 90
2.
a) -9
b) 9
3.
40:-20 + 3 - 2
-2 +3 -2
-4 +3 = -1
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Verified answer
Respuesta:
1.
a) 30
b) -63
c) 40
d) 90
2.
a) -9
b) 9
3.
40:-20 + 3 - 2
-2 +3 -2
-4 +3 = -1