Matematică, întrebare adresată de alingta11, 9 ani în urmă

1) Rezolvati urmatoarele ecuatii

2 2 2 2
a) 8x-1,2 =7-2x b) 7x+1,4 =8-3x c) 2,5 +103x=8+3x d) 1,6 +108x=8x+7


VA ROG FRUMOS !

Răspunsuri la întrebare

Răspuns de Raia1
2
8x+2x=1,2+7
10x=8,2
x=8,2:10
x=0,82
b) 7x+1,4=8-3x
7x+3x=8-1,4
10x=6,6
x=0,66
c)2,5+103x=8+3x
8-2,5=103x-3x
5,5=100x
x= 0,055
d) 1,6+108x=8x+7
7-1,6=108x-8x
5,4=100x
x=0,054

alingta11: MSS MULTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
Raia1: cu placere
alingta11: cum tiai dat seama unde trebuia sa dai la putere la 2
alingta11: scz am gresit
alingta11: XD
Raia1: ok
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