Răspuns:
a)
(x+3)-(130-110)=237
(x+3)-20=237
x+3=237+20
x+3=257
x=257-3
x=254
b)
(x+123)-(237-157)>2013
(x+123)-80>2013
2013+80>x+123
2093>x+123
x=2093+123
x=2216
c)
(67-42)-(x+11)=20
25-(x+11)=20
x+11=25+20
x+11=45
x=45-11
x=34
d)
(1437-1320)+(250-x)>100
117+(250-x)>100
117+100>250-x
217>250-x
x=217+250
x=467
Sper că te-am ajutat!!