Q: What is 5 times the sum of a number an 8?

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5

the sum of 8 and 4 times a number is 36

8(5+4)+7 = 79

The sum of 8 and 5 is 13. There is then no number with which to calculate its product.

This is simple algebra. Let the unknown number be n. Then the sum of this number and 8 = n + 8.

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(3a-8) + 5x(a)

5

8(5 + x), or 8x + 40.

the sum of 8 and 4 times a number is 36

8(5+4)+7 = 79

5*n + (n - 8) = 5n + n - 8 = 6n - 8

The sum of 8 and 5 is 13. There is then no number with which to calculate its product.

This is simple algebra. Let the unknown number be n. Then the sum of this number and 8 = n + 8.

5(x+3)+8

Not necessarily. If the number is 0, then the sum of 8 times the number and -192 is -192.

1.6

4(x + 5) = 2x + 8 4x + 20 = 2x + 8 2x = -12 x = -6