Kennedy3449
12.08.2020 •
Mathematics
Solve : (i) 5x+3/4 - 2x-4/3 = 5 (ii) 3(x+5) - 2(3x-1) = 15
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Ответ:
(i) x = 67/4
(ii) x = 2/3
Step-by-step explanation:
(i)
5x + 3/4 - 2x - 4/3 = 5 add like terms
3x -7/12 = 5
3x = 5 + 7/12 ➡ 3x = 67/12 and x = 67/4
(ii)
3(x+5) - 2(3x-1) = 15 ➡ 3x + 15 - 6x + 2 = 15 add like terms
17 - 3x = 15
2 = 3x and x = 2/3
Ответ:
4/24 + 6/24 + 8/24 = 18/24
simplify that to 3/4
so the answer is 1/4 because you do 1 - 3/4
(1 represents her total weekly allowance, 3/4 is the amount she used, so 1/4 is the amount she has left.)