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--超趕 , 40 marks -- 各位知識朋友 , 入黎幫我手 ar !!! ( 數學F.1 ) (58)
各位知識朋友 , 入黎幫我手 ar !!! 我有幾條數學問題唔識 , 幫手解答 ar( 數學F.1 )!!!!!!!!!!!!!!! (要步驟) 1. -x-2 = 6(x - 5) 2. -3(x - 1) = -2x - 2 3. 4(2x - 3) - 8 = 7 - 2(3x - 4)
最佳解答:
1. -x-2 = 6(x - 5) -x-2 = 6x-30 7x = 28 x = 4 2. -3(x - 1) = -2x - 2 -3x + 3 = -2x - 2 x = 5 3. 4(2x - 3) - 8 = 7 - 2(3x - 4) 8x - 12 - 8 = 7 - 6x + 8 8x - 20 = 15 - 6x 14x = 35 x = 5/2
其他解答:
1. -x-2 = 6(x - 5) -x-2 =6x-30 -x-6x=-30+2 -7x=-28 x=4 2. -3(x-1)=-2x-2 -3x+3=-2x-2 -3x+2x=-2-3 -x=-5 x=5 3. 4(2x-3)-8=7-2(3x-4) 8x-12-8=7-6x+8 8x-20=15-6x 8x+6x=15+20 14x=45 x=45/14 Hope this can help you!|||||1. -x-2 = 6(x - 5) -x-2=6x-30 7x=28 x=4 2. -3(x - 1) = -2x - 2 -3x+3=-2x-2 x=5 3. 4(2x - 3) - 8 = 7 - 2(3x - 4) 8x-12-8=7-6x+8 14x=35 x=35/14 x=5/2 x=2.5
--超趕 , 40 marks -- 各位知識朋友 , 入黎幫我手 ar !!! ( 數學F.1 ) (58)
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發問:各位知識朋友 , 入黎幫我手 ar !!! 我有幾條數學問題唔識 , 幫手解答 ar( 數學F.1 )!!!!!!!!!!!!!!! (要步驟) 1. -x-2 = 6(x - 5) 2. -3(x - 1) = -2x - 2 3. 4(2x - 3) - 8 = 7 - 2(3x - 4)
最佳解答:
1. -x-2 = 6(x - 5) -x-2 = 6x-30 7x = 28 x = 4 2. -3(x - 1) = -2x - 2 -3x + 3 = -2x - 2 x = 5 3. 4(2x - 3) - 8 = 7 - 2(3x - 4) 8x - 12 - 8 = 7 - 6x + 8 8x - 20 = 15 - 6x 14x = 35 x = 5/2
其他解答:
1. -x-2 = 6(x - 5) -x-2 =6x-30 -x-6x=-30+2 -7x=-28 x=4 2. -3(x-1)=-2x-2 -3x+3=-2x-2 -3x+2x=-2-3 -x=-5 x=5 3. 4(2x-3)-8=7-2(3x-4) 8x-12-8=7-6x+8 8x-20=15-6x 8x+6x=15+20 14x=45 x=45/14 Hope this can help you!|||||1. -x-2 = 6(x - 5) -x-2=6x-30 7x=28 x=4 2. -3(x - 1) = -2x - 2 -3x+3=-2x-2 x=5 3. 4(2x - 3) - 8 = 7 - 2(3x - 4) 8x-12-8=7-6x+8 14x=35 x=35/14 x=5/2 x=2.5
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