10X-3=9 6X-7=4X-5 1/2X-6=3/4X 急 HELP ME
1个回答
10X-3=9
10x=12
x=1.2
6X-7=4X-5
6x-4x=7-5
2x=2
x=1
1/2X-6=3/4X
3/4x-1/2x=-6
x/4=-6
x=-24
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9-3x-4x=4 27+5x-7x=3 7x-9x+26=10 10+x=4+2x 26.6-3x=29.9-6x 1
(1)5+2x=1 (2)8-x=3x+2 (3)10x-3=9 (4)6x-7=4x-5 (5)1/2x-6=3/4x
1)2x+8=16 (2)x/5=10 (3)x+7x=8 (4)9x-3x=6 (5)6x-8=4 (6)5x+x=9
1/1x2x3x4+1/2x3x4x5+1/3x4x5x6+1/4x5x6x7+1/5x6x7x8+1/6x7x8x9+
5/35 X 4/9 + 4/7 X 6/9 1.2/9 - 2/9 X 3/10 2.5/35 X 4/9 + 4/7
4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7=
①7x=6x﹢4②2x+3=11‐6x③3.4x‐9.8=1.4x﹢9④4x‐3﹢3x=6x‐2
1&6=1X2X3X4X5,6&6=6X7X8X9X10.据此求:(2&5)÷(6&5)
解方程:①6x/3=2.7 ②4(3-x)/6=1.8 ③9(x+3)/2=18 ④2(5-x)+2-6=10x
[7/10]x-[3/10]x=10 5.6+4x=8 2.5x-1.1=0.9.