若4x+3y+7=0,则3(8y-x)-5(x+6y-2)的值等于
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若4x+3y+7=0,则3(8y-x)-5(x+6y-2)的值等于
若4x+3y+7=0,则3(8y-x)-5(x+6y-2)的值等于
若4x+3y+7=0,则3(8y-x)-5(x+6y-2)的值等于
4x+3y=-7
原式=24y-3x-5x-30y+10
=-8x-6y+10
=-2(4x+3y)+10
=14+10
=24
∵4x+3y+7=0
∴4x+3y=-7
∴3(8y-x)-5(x+6y-2)
=24y-3x-5x-30y+10
=-8x-6y+10
=-2(4x+3y)+10
=-2×(-7)+10
=14+10
=24
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