3.6x-x =0.78
2.6x=7.8
x=3
3.6x-x =0.78
4个回答
相关问题
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x+y=95 0.4x+0.78y=0.6x+0.6y
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78(x-3)-4(3-x)=0
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解方程：x+3.4x=28.6 x-0.78x=0.33 7x-2x=25.5 3.6x+2.9x=4.55．
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0.6:百分之36=4/5:x4/x+3=0.5 (3.8-x):7=2/78:5+x/4=4:5
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计算题；3.78X (-1.6 )+6.22X( -1.6 )
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解方程： 78×3x=3.6 x÷1.98=0.4 （4.5-x）×0.375=0.75 [1/2]x+[2/3]x=1
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X-0.48X=0.78
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x²+0.7x-0.78=0
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若1.78+【1又7/8*0.8-3（x+3/9)]/6分之5=0.28,求x
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0.25x4.78x4=0.25x4x4.78=1x4.78用了什么乘法定律