solvefor x,-4x+2y=-60

解答

求解

x, - 4 x + 2 y = - 60

x = \frac{y + 30}{2}

求解步骤

- 4 x + 2 y = - 60

将

2 y

到右边

- 4 x = - 60 - 2 y

两边除以

- 4

x = \frac{y + 30}{2}

so l v e f or x, 5 x - 3 y - 9 = 0

0.25 (4 f - 3) = 0.05 (10 f - 9)

so l v e f or x, x + 6 r = \frac{5}{2} x

so l v e f or x, 3 x + 15 y = 0

\frac{( 5 + 2 3 )}{( 7 + 4 3 )} = a - 63