-6(2/3+1)+7c+5,при c =7

To solve this expression, we first substitute c = 7 into the expression:

-6(2/3 + 1) + 7(7) + 5 = -6(2/3) + 7(7) + 5

Next, we simplify the expression within the parentheses:

-6(2/3) = -6 * 2/3 = -12/3 = -4

Now we can substitute this value back into the expression:

-4 + 7(7) + 5 = -4 + 49 + 5

Finally, we simplify the expression further:

-4 + 49 + 5 = 50

Therefore, when c = 7, the expression -6(2/3+1)+7c+5 is equal to 50.