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Anaturcu33
a fost răspuns

aflati nr natural x stiind ca 2*(3x+1)-1=43

Răspuns :

Marcela16
2× ( 3x + 1 ) - 1 = 43
6x + 2 - 1 = 43
6x + 2 = 43 +1
6x + 2 = 44
6x = 44 - 2
6x = 42
x = 42 : 6 = 7
2x (3x+1)-1=43
6x+2-1=43
6x+2=43+1
6x+2=44
6x=44-2
6x=42
x=42:6=7

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