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