Question

Aflați x din:
8x - 4,15 + x = 15
2x + 7 = 45,12

Answer 1

8x+x=15+4,15
9x=19,15
x=19,15:9
x=2,12


2x=45,12-7
2x=38,12
x=38,12:2
x=19,06

Answer 2

8 x - 4,15 + x = 15

9 x = 19,15

x = 19,15 : 9

x = 2,12(7)

_________________

2 x + 7 = 45,12

2 x = 45,12 - 7

2 x = 38,12

x = 38,12 : 2

x = 19,06