Răspuns :
(x+16)*3-96=x
x*3+16*3-96=x
x*3+48-96=x
x*3-48=x
x*3-48-x=0
2x-48=0
2x=48
x=48:2
x=24
x*3+16*3-96=x
x*3+48-96=x
x*3-48=x
x*3-48-x=0
2x-48=0
2x=48
x=48:2
x=24
(a+16)x3-96=a
(a+16)x3=a-96
a+16=(a-96)x3
a+16=3a-288
4a=288-16
4a=272
a=272:4=68
(a+16)x3=a-96
a+16=(a-96)x3
a+16=3a-288
4a=288-16
4a=272
a=272:4=68