tot optul vă rog frumos

Răspuns:
a) x=320-(150-40)=
x=320-110
x=210
y=(320-120)-40
y=200-40
y=160
x>y
b) x=575-(235+100)
x=575-335
x=240
y=(575-235)+100
y=340+100
y=440
x<y
c) x=5200-[700-(100-30)]
x=5200-(700-70)
x=5200-630
x=4570
y=(5200-700)+100-30
y=4500+100-30
y=4600-30
y=4570
x=y