Ответ:
1)3•(х+4)
3х+3×4
3х+12
2) 4+2×(3-х)
4+6-2х
10-2
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Ответ:
1)3•(х+4)
3х+3×4
3х+12
2) 4+2×(3-х)
4+6-2х
10-2