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vanyama1
@vanyama1
July 2022
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упростить выражение: а)(с+5.4)-(4.9+с) б) -3*(0.2x+0.4y)+2*(1.6x+2.8y)
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АляЛеонор
1)(с+5.4)-(4.9+с)
с+5.4-4.9-с
0,5
2) -3*(0.2х+0.4у)+2*(1.6х+2.8у)
-0.6х-1.2у+3.2х+5.6у
2.6х+4.4у
2 votes
Thanks 1
sofiaavpamenko
А) (c+5.4)-(4.9+c) = c+5.4-4.9-c = 0.5
Б)
3*(0.2x+0.4y)+2*(1.6x+2.8y) = 0.6x+1.2y+3.2x+5.6y = 3.8x+6.8y
1 votes
Thanks 1
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Answers & Comments
с+5.4-4.9-с
0,5
2) -3*(0.2х+0.4у)+2*(1.6х+2.8у)
-0.6х-1.2у+3.2х+5.6у
2.6х+4.4у
Б)3*(0.2x+0.4y)+2*(1.6x+2.8y) = 0.6x+1.2y+3.2x+5.6y = 3.8x+6.8y