0 × (- M) = (), m × 0 = () (- 1 / 3) × 3 / 7 = (), (- 3 / 16) × (- 16 / 9) = () (- 5) × (1 + 1 / 5) = (), X · 1 / x = () (x ≠ 0) 7 of 8 × (- 3 of 10) × 0 × (17 of 19) = () A > 0, B < 0, then AB 0 (greater or less than)

0 × (- M) = (), m × 0 = () (- 1 / 3) × 3 / 7 = (), (- 3 / 16) × (- 16 / 9) = () (- 5) × (1 + 1 / 5) = (), X · 1 / x = () (x ≠ 0) 7 of 8 × (- 3 of 10) × 0 × (17 of 19) = () A > 0, B < 0, then AB 0 (greater or less than)

0 0 -1/7 1/3 -6 1 0

The product of X and 25 is equal to the product of 17 and 12

According to the basic properties of proportion, we can get: & nbsp; 17: x = 25:12, & nbsp; & nbsp; & nbsp; 25X = 17 × 12, & nbsp; & nbsp; & nbsp; & nbsp; 25X = 114, 25X △ 25 = 114 △ 25, & nbsp; & nbsp; & nbsp; & nbsp; X = 528

The product of X and 8 plus five times of X is 169. Find the value of X
It's time to finish

8x+5x=169
13x=169
x=13