Question

1,4(2+с)-3(4+к)при с=5,к=1

Answer 1

Ответ: 1,4( 2+5) -3( 4+1) = 1,4 *7 - 3*5= 9,8 - 15= -5,2

Answer 2

To evaluate the expression 1,4(2+с)-3(4+к) when с = 5 and к = 1, we substitute the given values into the expression and perform the calculations:

1,4(2+с) - 3(4+к)

Replacing с with 5 and к with 1:

1,4(2+5) - 3(4+1)

Simplifying inside the parentheses:

1,4(7) - 3(5)

Now, we perform the multiplications:

1,4 * 7 - 3 * 5

7,8 - 15

Finally, subtracting:

-7,2

Therefore, when с = 5 and к = 1, the expression 1,4(2+с)-3(4+к) evaluates to -7,2.