Rozwiąż i sprawdz równanie: 1) 7(5x- 4)=2(16+1) 2) 3(5-x)=36-10x 3) 27x-4x= -3x+234 DAM NAJ!!!!!!!!!!
Rozwiąż i sprawdz równanie:
1) 7(5x- 4)=2(16+1)
2) 3(5-x)=36-10x
3) 27x-4x= -3x+234
DAM NAJ!!!!!!!!!!
1) 35x - 28 = 32 + 2 35x - 28 = 34 35x = 34 + 28 35x = 62 / :35 x = 62/35 x = 1 27/35 35· 62/35 - 28 = 32 + 2 62 - 28 = 34 34 = 34 2) 15 - 3x = 36 - 10x -3x + 10x = 36 - 15 7x = 21 x = 3 15 - 3·3 = 36 - 10·3 15 - 9 = 36 - 30 6 = 6 3) 27x - 4x + 3x = 234 26x = 234 x = 9 27·9 - 4·9 + 3·9 = 234 243 - 36 + 27 = 234 234 = 234