" the sum " means add
(c + d) - 3 <== ur expression
= 0.10606
Step-by-step explanation:
Since we have only one digit in the numerator and the denominator has 2 digits, we have to 0 along with 7, so that it becomes 70, 1 time 66 is 66, 70 - 66 = 4 is the remainder, so the quotient is 0.1, then along with 4 we have to add one 0 , so it becomes 40 which is lesser than 66 so one more 0 is added and then it becomes 400, 6 times 66 is 396, 400 - 396 = 4 again the process going on. The quotient is 0.10606...
<span>3x+ 2y+7 -5x+7y
= -2x + 9y + 7
hope it helps</span>
5x - 2x = 63 + 57
3x = 120
x = 40