Question

7x-2x-3+x-(x-2) при x=9

Answer 1

упростить: 7х-2х-3+х-(х-2)=5х-3+х-(х-2)

Дальше подставляем вместо  х - 9

5*9-3+9-(9-2)= 51-7= 44

Answer 2

To evaluate the expression 7x - 2x - 3 + x - (x - 2) when x = 9, we substitute the value of x into the expression and simplify:

7(9) - 2(9) - 3 + 9 - (9 - 2)

= 63 - 18 - 3 + 9 - 7

= 45 - 3 + 9 - 7

= 42 + 9 - 7

= 51 - 7

= 44

Therefore, when x = 9, the expression 7x - 2x - 3 + x - (x - 2) evaluates to 44.