Question

calcule a) -7+(+13 b) 10-(-20) c) -11-(-6) d) 32+(-46

Answer 1

a) -7 + (+13)
-7 + 13
+6

b) 10 -(-20)
10 + 20
+30

c) -11 - (-6)
-11 + 6
-5

d) 32 + (-46)
32 - 46
-14

Answer 2

boa tarde! letra a)-7+(+13)                                  regra de sinais + com +=+
                             -7+13                                                               - com -= +
                               +6                                                                  - com += -
                          b)10-(-20)                                                            + com - =-
                               10+20
                                 +30
                          c)-11-(-6)
                              -11+6
                                 -5
                           d)32+(-46)                             
                               32-46                            
                                 -14
espero ter ajudado e para facilitar para vc eu coloquei a regrinha de sinais