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Q: 7 times the sum of x and s?

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28

6*(x + 7)

x-7

6 x 7

x+7

7

the sum of means (___+____) so you will need to open parentheses after the 2 times. 2*(7+x) is the expression you are looking for.

It is an equation: 3x+11=32 and the value of x is 7

This is easiest to answer by summing all the numbers 1-10000 and subtracting the sum of the multiples of 7 (7, 14, 21, ..., 9996). The sum of a series is: S = (first + last) x number_of_terms / 2 For for 1-10000, the sum is: S1 = (1 + 10000) x 10000 / 2 = 10001 x 5000 = 50005000 For the multiples of 7 the sum is: S2 = (7 + 9996) x 1428 / 2 = 10003 x 714 = 7142142 So the sum of all integers not greater than 10000 that are not divisible by 7 is: S = S1 - S2 = 50005000 - 7142142 = 42,862,858

3 + 4 = 7 7 x 2 = 14

x + 7

7 x 7 x 7 x 7 = 2401

x times the sum of x and 9 x times (x times 9) x(9x) 9 times x[squared] 9x[squared]

7 x (2N +16) 14N + (7 x 16) 14N + 112

7+x, because these are not like terms, they cannot be combined.

x(9+x)

7+(x+5)

you have to know what x and s are because they are variables.

(21/7) + (3 x 5) = 3 + 15 = 18

8x + 15 = 7 so 8x = 7 - 15: x = -1

3(x^2 +7) is the same as 3x^2 + 21 to find the answer of x set an value to the equation

28 + 35 = (4 x 7) + (5 x 7) = 9 x 7 = 63

5(x^2 + y)

x + 7

7 x 7 x 49 x 49 x 27 = 3,176,523