👤

Rezolvati in N ecuatiile:
a)2x+5=33
b)5(x-3)=45
c)4x-15=305
d)2(5x-1)+12=320
e)5(3x-2)+11=301 Va rog ajutati-ma  E pentru CtinaMaria31



Răspuns :

a)2x+5=33
2x=33-5
2x=28
x=14

b)5(x-3)=45
5x-15=45
5x=45+15
5x=60
x=12

c)4x-15=305
4x=305+15
4x=320
x=80

d)2(5x-1)+12=320
10x-2+12=320
10x=320+2-12
10x=310
x=31

e)5(3x-2)+11=301
15x-10+11=301
15x=301+10-11
15x=300
x=20