6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)
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6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)6(x-1)=
6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)
6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)
6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)
6(x-1)=5(x+3)
6x-6=5x+15
6x-5x=15+6
x=21
0.2(3-x)=0.4(6-x)
3-x=2(6-x)
3-x=12-2x
2x-x=12-3
x=9
6(x-1)=5(x+3)
6X-6=5X+15
6X-5X=15+6X=21
0.2(3-x)=0.4(6-x)
0.6-0.2X =2.4-0.4X
0.4X-0.2X=2.4-0.6
0.2X =1.8
X=9
6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x) 这两道题用方程
6(x-1)=5(x+3)
x=6+15=21
0.2(3-x)=0.4(6-x)
0.6-2.4=-0.2x
x=9
6(x-1)=5(x+3)6x-6=5x+156x-5x=15+6x=210.2(3-x)=0.4(6-x) (3-x)=2(6-x) 3-x=12-2x2x-x=12-3x=9
6(x-1)=5(x+3)和0.2(3-x)=0.4(6-x)
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*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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