Question

12+7х-(1-3х)при х=-1,7

Answer 1

Ответ:

12-7*(-1.7)-(1-3*1,7)=23,9-6,1=17,8

Объяснение:

Answer 2

Ответ: 12+7·(-1,7)-(1-3· -1,7)= -6

Объяснение:

1) 3·(-1,7)= -5,1

2) 1-(-5,1)= 6,1

3) 7·(-1,7)= -11,9

4) 12+(-11,9)= 0,1

5) 0,1 - 6,1 = -6

Answer 3

To evaluate the expression 12 + 7x - (1 - 3x) when x = -1.7, we substitute the value of x into the expression and perform the calculations.

Replacing x with -1.7:

12 + 7(-1.7) - (1 - 3(-1.7))

Calculating the values:

12 + (-11.9) - (1 + 5.1)

Simplifying further:

12 - 11.9 - 1 - 5.1

Performing the additions and subtractions:

-0.9 - 6.1

Calculating the final result:

-7

Therefore, when x = -1.7, the expression 12 + 7x - (1 - 3x) evaluates to -7.