2 years ago

Rozwiąż równania:

1 answer:

3 0

$a)\\x-7=(7-x)-(14-2x)\\x-7=7x-14+2x\\x-7=-7+x\\b)\\x-4x+(2x+3)=6(3-x)\\x-4x+2x+3=18-6x\\-x+3=18-6x\\-x+6x=18-3\\5x=15 //:5\\x=3\\c)\\2x+15=16(1+0,125x)\\2x+15=16+2x\\15=16$

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