4x(0.8+x)=7.2, 0.75x+6=2x
1个回答
4x(0.8+x)=7.2
3.2+4x=7.2
4x=7.2-3.2
4x=4
x=1
0.75x+6=2x
2x+0.75x=6
2.75x=6
x=24/11
相关问题
解方程:4x-0.8=4x-(7.2+0.8)=0.75 0.7x÷1.4=0.6.
1.x+1/5-4/7x=7/4 2.3.6*0.5-0.75x0.8
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x:3.6=7/8:0.75x:3.6=7/8:0.75
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4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119
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3.84:2.4=x:1/4 x:0.75=20.25:1/8 3.6:4/3=1.8:x x:0.75=2:1.25
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