- 8x + 3y = -17; 7x + 4y = 5?

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What happens when electricity goes into a computer circuit board and how does this electrical flow become data? An element m having its nitride formula is mn what will be the formula of its sulphate.carbonate.bisulphite and carbide? How do you solve this problem:
3.8y +4/7x +2=0 for y? The value of x? The pH of 0.15 M trimethylammonium chloride, (CH3)3NHCl, a salt, is 5.34. What is the percent hydrolysis?