carilah penyelesaian soal dari 1. x + 5 = 12 2. 2x + 8 = 18 3. 4x + 5 = 2x + 3 4. 2(3x+3)= 3x + 18 5.1/4x + 2/3 = 1/2
Matematika
sae14
Pertanyaan
carilah penyelesaian soal dari
1. x + 5 = 12
2. 2x + 8 = 18
3. 4x + 5 = 2x + 3
4. 2(3x+3)= 3x + 18
5.1/4x + 2/3 = 1/2
1. x + 5 = 12
2. 2x + 8 = 18
3. 4x + 5 = 2x + 3
4. 2(3x+3)= 3x + 18
5.1/4x + 2/3 = 1/2
1 Jawaban
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1. Jawaban Rinzani
1. x + 5 = 12
x = 12 - 5
x = 7
2. 2x + 8 = 18
2x = 18-8
2x = 10
x = 10/5
x = 2
3. 4x + 5 = 2x + 3
4x - 2x = 3 - 5
2x = -2
x = -2/2
x = -1
4. 2(3x+3)= 3x + 18
6x + 6 = 3x + 18
6x - 3x = 18 - 6
3x = 12
x = 12/3
x = 4
5. 1/4x + 2/3 = 1/2
1/4x = 1/2 - 2/3, samakan penyebutnya
1/4x = 3/6 - 4/6
1/4x = -1/6 , kalikan silang
-4 = 6x
x = -6/4