Răspuns :
a) x=793-247
x=546
b) x=2467-318
x=2149
c) x=735-517
x=218
d) x=482+267
x=749
e) x=23 536-10 039
x=13 497
f) x=6251-(4357+937)
x=957
g) x=873-243
x=630
h) x=215+772
x=987
Explicație pas cu pas:
a)
247+x=783
x=783-247
x=536
d)
x-482=267
x=267+482
x=749
g)
873-x=243
x=873-243
x=630
b)
x+318=2 467
x=2 467-318
x=2 149
e)
23 536-×=10 039
x=23 536-10 039
x=13 497
h)
x-215=772
x=772+215
x=987
c)
735-x=517
x=735-517
x=218
f)
4 357+×+937=6 251
4 357+×=6 251-937
4 357+×=5 314
x=5 314-4 357
957
i)
7 815-x+737=3 511
7 815-×=3 511-737
7 815-×=2 774
x=7 815-2 774
x=5 041