Carilah nilai x dri persamaan berikut! A). (3x+3) : 3 = (5x+1) : 4 = B). (2x+1) : 3 = (2x+5) : 7 =
Matematika
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Pertanyaan
Carilah nilai x dri persamaan berikut!
A). (3x+3) : 3 = (5x+1) : 4 =
B). (2x+1) : 3 = (2x+5) : 7 =
A). (3x+3) : 3 = (5x+1) : 4 =
B). (2x+1) : 3 = (2x+5) : 7 =
1 Jawaban
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1. Jawaban minjipark262p40egb
a. (3x+3) : 3 = (5x+1) :4
4 (3x+3) = 3 (5x+1)
12x + 12 = 15x + 3
12 + 3 = 15x - 12x
15 = 3x
x = 15/3
x = 5
2. (2x+1) : 3 = (2x+5) : 7
7 (2x+1) = 3 (2x+5)
14x + 7 = 6x + 15
14x - 6x = 15-7
8x = 8
x = 1