Question

Rezolvati va rog frumos:)
A)1259-3y=602 B)17+4a=1025 C)5(14+b)=170 D)27(n-27)=27 E)(21-z):21=0
F)44:(c+440=1 G)3x+4x-2-5x=0

Answer 1

a) 1259 - 3 y = 602
1259 - 602 = 3y
657 = 3y
y = 657 / 3
y = 219

b) 17 + 4a = 1025
4a = 1025 - 17
4a = 1008
a = 1008 / 4
a = 252

c) 5 (14 + b) = 170
70 + 5 b = 170
5b = 170-70
5b = 100
b = 100/ 5
b = 20

d) 27 (n-27) = 27
27 n - 729 = 27
27 n = 729 + 27
27 n = 756
n = 756/ 27
n = 28

e) (21-z) :21 = 0
1 - z/21 = 0
z/21 = 1
z = 21

f) 44 : (c + 440) = 1
c + 440 = 44
c = 44 - 440
c = - 396

g) 3x + 4x - 2 - 5x = 0
2x - 2 = 0
2x = 2
x = 2/2
x = 1

Answer 2

a. 1259-3y=602
    -3y=602 -1259
    -3y=-657 /*(-1)
     y= 219

b.17+4a=1025
   4a=1025-17
   4a=1008
   a=252

c.5(14+b)=170
  75+5b=170
  5b=170-75
  5b=95
  b=19

d. 27(n-27)=27
    27n-729=27
    27n= 27+729
    27n=756
    n=28

e) (21-z) :21 = 0
1 - z/21 = 0
z/21 = 1
z = 21

f) 44 : (c + 440) = 1
c + 440 = 44
c = 44 - 440
c = - 396

g) 3x + 4x - 2 - 5x = 0
2x - 2 = 0
2x = 2
x = 2/2
x = 1