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(90一4x)÷6=1怎么解方程

9÷4x=1 4x=9 x=2.25

4X=18+1.6 x=19.6÷4 x=4.9

3分之1X-20%X=6 x/3-x/5=6 2x/15=6 x=6*15/2 x=45 X+10%X=33 1.1x=33 x=30 1÷(X+3分之2)=5分之4 x+2/3=5/4 x=5/4-2/3 x=15/12-8/12 x=7/12 X-5分之4X=15分之4 x/5=4/15 x=4/15*5 x=4/3

4x+1/6=3 两边同乘以 6 得 24x+1= 18 24x= 17 x=17/24 x/2+2x=4.5 5x/2=4.5 两边同乘以 2 得 5x=9 x=9/5 x/(1/3)+1/3=4/9 3x+1/3=4/9 两边同乘以 9 得 27x +3 =4 27x =1 x =1/27

4x-1.6x-6=30 2.4x-6=30 2.4x=30+6 2.4x=36 x=36÷2.4 x=15

(1)解:x=2/3-1/3 x=1/6 检验:左边=1/6 右边=1/6 所以x=1/6是方程的解 (2)解:x=2/3+2/9 x=8/9 检验:左边=8/9 右边=8/9 所以x=8/9是方程的解 (3)解:4/9x=5/6*8/3 4/9x=15/48 x=45/64 检验:左边=5/6 右边=5/6 所以x=45/64是方程的解 (...

2x=4x-8 8=2x x=4 x÷2-6=x/3 x/2-x/3=6 x/6=6 x=36 3﹙2x-1﹚﹣2﹙1-x﹚=0 6x-3-2+2x=0 8x-5=0 8x=5 x=5/8 2x-5÷6+3-x÷4=1 2x-5/6+3-x/4=1 2x-x/4=1+5/6-3 7x/4=-7/6 x/4=-1/6 x=-2/3

(1)4x-0.8x-6=16 x=6 (2) = x=0.5

【1】1.4×7+x=12.8 x=12.8-9.8; x=3; 【2】(6+3x)÷4=9; 6+3x=36; 3x=30; x=10; 【3】5分之2x+2分之1=24分之19 2x/5=19/24-12/24; 2x/5=7/24; x=35/48; 【4】18÷4x-3=9(有补充!) 18÷4x=12; 4x=18/12; 4x=3/2; x=3/8; 【5】3.4+9.8=1.4+9x 9x...

(1)4.5×6+4x=41 27+4x=41 4x=41-27 4x=14 x=14/4 x=3.5 (2)7x-3.4x=0.72 (7-3.4)x=0.72 3.6x=0.72 x=0.72/3.6 x=0.2 (3)2x+1.5x=42 (2+1.5)x=42 3.5x=42 x=42/3.5 x=12 (4)(x-4.5)×6=318 6x-4.5*6=318 6x-27=318 6x=318+27 6x=345 x=3...

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