简便运算求未知数
1个回答
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63*1/6+37/6
=1/6*(63+37)
=1/6*100
=50/3
9又5/6*4.25+4又1/4*1/6
=4.25*(59/6+1/6)
=4.25*10
=42.5
[10-(4又1/3+1.75*2)]/(2又1/6)
=[10-13/3-3.5]*6/13
=[6.5-13/3]*6/13
=3-2
=1
1.25*(0.8+8+80)
=1+10+100
=111
2:2又1/2=x:5
5x/2=10
x=4
1又3/4 x-1/2x=6.25
5x/4=6.25
x=5
3*0.7+4x=6.5
4x=4.4
x=1.1
=1/6*(63+37)
=1/6*100
=50/3
9又5/6*4.25+4又1/4*1/6
=4.25*(59/6+1/6)
=4.25*10
=42.5
[10-(4又1/3+1.75*2)]/(2又1/6)
=[10-13/3-3.5]*6/13
=[6.5-13/3]*6/13
=3-2
=1
1.25*(0.8+8+80)
=1+10+100
=111
2:2又1/2=x:5
5x/2=10
x=4
1又3/4 x-1/2x=6.25
5x/4=6.25
x=5
3*0.7+4x=6.5
4x=4.4
x=1.1
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