Question

Rezolvati ecuatiile:
17+4a=1025
5(14+b)=170
27(n-27)=27
(21-z):21=0
44:(c+44)=1
Vă rog ajutatimă Dau Coroana!!!!!!!!!!!!!

Answer 1

17+4a=1025
4a=1025-17=>a=1008:4=>a=252

5(14+b)=170
70+5b=170=>5b=170-70=>b=100:5=>b=20


27(n-27)=27
27n-729=27=>27n=27+729=>n=756:27=>n=28


(21-z):21=0
21-z=0x21=>-z=-21(-1)=>z=21


44:(c+44)=1
c+44=44:1
c=44-44=>c=0

Answer 2

4a = 1025-17
4a = 1008
a = 1008:4
a = 252

70 + 5b = 170
5b = 170-70
5b = 100
b = 100:5
b = 20

27n - 729=27
27n=27+729
27n = 756
n = 756:27
n = 28

21-z = 0*21
21-z = 0
21 = z

c+44 = 1*44
c+44=44
c = 44-44
c = 0