Question

63у-23у-17у=69 21у-17у+9у-12=66

Answer 1

63у - 23у - 17у = 69

(63 - 23 - 17) · у = 69

23 · у = 69

у = 69 : 23

у = 3

- - - - - - - - - - - -

21у - 17у + 9у - 12 = 66

(21 - 17 + 9) · у = 66 + 12

13 · у = 78

у = 78 : 13

у = 6

Answer 2

To solve the equations, let's first combine like terms on each side of the equation:

Equation 1: 63у - 23у - 17у = 69 Simplify: (63 - 23 - 17)у = 69 Simplify further: 23у = 69 Divide both sides by 23 to isolate у: у = 69 / 23 Simplify: у = 3

Now, let's solve the second equation:

Equation 2: 21у - 17у + 9у - 12 = 66 Combine like terms: (21 - 17 + 9)у - 12 = 66 Simplify: 13у - 12 = 66 Add 12 to both sides to isolate 13у: 13у = 66 + 12 Simplify: 13у = 78 Divide both sides by 13 to find the value of у: у = 78 / 13 Simplify: у = 6

So, the solution to the system of equations is у = 3 and у = 6. However, since these are two separate equations, there is no single value that satisfies both of them simultaneously. Therefore, there is no common solution for у that satisfies both equations simultaneously.