Răspuns:
1. (132-98+109+109):4=
=252:4=63
2.(267+78):5x9-437=
=345:5x9-437=
=69x9-437=
=621-437=
=184
3.(86+214-276)x9:4+46=
=24x9:4+46=
=216:4+46=
=54+46=
=100
