40*4+40+4x=360解答

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40*4+40+4x=360解答

40*4+40+4x=360解答
40*4+40+4x=360解答

40*4+40+4x=360解答
160 + 40 + 4x = 360
360 - 160 - 40 = 4x
160 = 4x
160 / 4 = x
40 = x