1)5х-6+7-3х+х=3х+1
2)5+3*(2х-5)-х=5+6х-15-х=5х-10
3)4*(31х+27)-7*(17х-5)-100=124х+108-119х+35-100=5х+43
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1)5х-6+7-3х+х=3х+1
2)5+3*(2х-5)-х=5+6х-15-х=5х-10
3)4*(31х+27)-7*(17х-5)-100=124х+108-119х+35-100=5х+43