Реши уравнение 8(х-4.5)-6*(х+3.5)=23

Question

Реши уравнение 8(х-4.5)-6*(х+3.5)=23

Answer 1

8(х-4,5)-6(х+3,5)=23
8х-36-6х-21=23
8х-6х=23+21+36
2х=80
х=80:2
х=40

Answer 2

8(х-4.5)-6*(х+3.5)=23,8х - 36 - 6х - 21 = 23,
8х - 6х = 23 + 36 + 21,
2х = 80,
х = 40,
проверка:
8*(40-4,5) - 6*(40+3,5) = 23,
8*35,5 - 6*43,5 = 23,
284 - 261 = 23,
23 = 23