"Unsolvable" Equations( Week 34 Practice) 1. If 8 × = 9, what is the value of 315 × ? 2. If x + y + z = 6 and 4x + 6y + 4z = 30, what is the value of y? 3. Suppose 7x + 8y = 9 and 8x + 7y = 51. What is (x + y) = ? 4. If 3(4x − 1)2 + 5(6y + 6)2 = 0, what is the value of 4x − 6y? 5. If = , what is the value of ? |