x+8x+4x+5x=1300+5x

解答

x + 8 x + 4 x + 5 x = 1300 + 5 x

x = 100

求解步骤

x + 8 x + 4 x + 5 x = 1300 + 5 x

两边减去

5 x

x + 8 x + 4 x + 5 x - 5 x = 1300 + 5 x - 5 x

化简

x + 8 x + 4 x = 1300

x + 7 = - 7

so l v e f or x, 3 x - (9 x + y) = 5 y - (2 x + 9 y)

so l v e f or a, h = a B

v = 20 L

y = 2^{2} + 3