-(10x-18)+19(4+3x)=9-21(x+7)+4(18-3x)
-(10х-18)+19(4+3х)=9-21(х+7)+4(18-3х)
-10х+18+76+57х=9-21х-147+72-12х
47х+33х=9-147+72-18-76
80х=-160
х=-2
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-(10х-18)+19(4+3х)=9-21(х+7)+4(18-3х)
-10х+18+76+57х=9-21х-147+72-12х
47х+33х=9-147+72-18-76
80х=-160
х=-2