Tentukan himpunan penyelesaian setiap persamaan berikut a. 2× + 8 = × - 12 b. 3(2× + 1) = 27 c. 5× + 9 = 4× -8 d. 2(5× + 4) - 4× = 8 - (2× - 5) e. 5(× - 1) = 3(
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Tentukan himpunan penyelesaian setiap persamaan berikut a. 2× + 8 = × - 12 b. 3(2× + 1) = 27 c. 5× + 9 = 4× -8 d. 2(5× + 4) - 4× = 8 - (2× - 5) e. 5(× - 1) = 3(× + 6)
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1. Jawaban DianPramanaPutra
a. 2x+8=x-12
2x-x=-12-8
x= -20
b. 3(2x+1) = 27
6x+3 =27
6x = 27-3
6x = 24
x= 4
c. 5x +9 =4x-8
5x-4x = -8-9
x= -17
d. 2(5x+4) -4x =8-(2x-5)
10x+8-4x = 8-2x+5
10x-4x+2x = 8+5-8
8x = 5
x = 5/8
e. 5(x-1)=3(x+6)
5x-5 = 3x+18
5x-3x = 18+5
2x = 23
x = 23/2