Question

Найдите корень уравнения

10(x-9)=7

Прошу расписать подробно.

Answer 1

$10(x-9) = 7\10x - 90 = 7\10x = 7 + 90 = 97\x = frac{97}{10} = 9.7$

Answer 2

10x-90=7

Answer 3

10x=7+90

Answer 4

10x=97

Answer 5

x=97:10

Answer 6

x=9,07

Answer 7

x-9=7:10. 7:10=0,7
x-9=0,7
x=9+0,7. 0,7
+9,0
-----
9,7
x=9,7