Răspuns:
3
a)
577+x=867
x=867-577=290
c)
1286+x=5875
x=5875-1286=4589
4
a)x=783-247=536
d)x=267+482=749
g)x=873-243=630
b)x=246-318=-72x=
e)x=23536-1=23535
h)x=772×215=987
