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maths,,,,,,,,,,,,,,,,,help.................
發問:
16. 4分3x-2(24-x)=3
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最佳解答:
3/4x -2(24-x) = 3 3x/4 -48 + 2x = 3 3x/4 + 2x = 3+48 3x/4 + 2x = 51 3x/4 = 51 - 2x 3x = 4(51 - 2x) 3x = 204 - 8x 3x + 8x = 204 11x = 204 x = 204/11 x =18.54
其他解答:
16. 4分3x-2(24-x)=3 3/4 x - 48 + 2x = 3 3/4x - 48 + 8/4x = 3 11/4x = 3 + 48 11/4x = 51 x = 51 / (11/4) x = 51*4/11 x = 204/11|||||4分3x-2(24-x)=3 (3/4)x+48+2x=3 2x+(3/4)x= - 45 (2/3/4)x= - 45 x = - (16/4/11)
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