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Mathematics
Santos
12 June, 18:28
5 (2x - 3) + 2 (3x + 1)
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Monique Becker
12 June, 18:39
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1/3 (2x - 3) + 1 = 1/4 (3x + 5) - 2
2x/3 - 3/3 + 1 = 3x/4 + 5/4 - 2
2x/3 - 1 + 1 = 3x/4 + 5/4 - 2
2x/3 - 3x/4 - 0 = 3x/4 - 3x/4 + 5/4 - 2
2x*4/3*4 - 3x*3/4*3 = 0 + 5*1/4*1 - 2*4/1*4
8x/12 - 9x/12 = 5/4 - 8/4
(8x - 9x) / 12 = (5 - 8) / 4
-x/12 = - 3/4
-x/12 * 12 = - 3/4 * 12
-x = - 36/4
-x * - 1 = - 36/4 * - 1
x = 36/4
x = 9
Done
For check the answer
let x = 9
1/3 (2[9] - 3) + 1 = 1/4 (3[9] + 5) - 2
1/3 (18 - 3) + 1 = 1/4 (27 + 5) - 2
1/3 (15) + 1 = 1/4 (32) - 2
15/3 + 1 = 32/4 - 2
15/3 + 3/3 = 32/4 - 8/4
18/3 = 24/4
6 = 6
therefor
x = 9 is a correct answer
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