Question

доказать тождество 2t-(17-(t-7))=3(t-8)

Answer 1

2t-(17-t+7)=3t-24
2t-17+t-7=3t-24
3t-24=3t-24

Answer 2

2t-(17-(t-7))=3(t-8)
2т-(17-т+7)=3т-24
2т-17+т-7=3т-24
3т-24=3т-24