Question

1.Calculati ecuatiile 3-5x=18 si 4x-12=-27 va rog repede sii corect dau coroana
2.Calculatii in modul cel mai rationar a] -9+(-13)+17+(-6)+11
b) 14+(-8)+(-25)+12+7
c)43-60+12+39-21

Answer 1

1. 3-5x=18
5x=15
x=3;

4x-12= -27
4x= -15
x= -3,75.

2.
a) -9-13+17-6+11=
-28+28=0
b) 14-8-25+12+7=
-33+33=0
c) 43-60+12+39-21=
94-81=13