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3x=13-7
x=5/3
2.x+8=10
×=2
3.2x-3=1
2x=4
x=2
4.x+1=5
x=4
- 7 = - 7 +
3x = 6
x = 2
2. x + 8 = 10
- 8 = - 8 +
x = 2
3. 2x - 3 = 1
+3 = +3 +
2x = 4
x = 2
4. x + 1 = 5
- 1 = - 1 +
x = 4
Pernyataan yang ekuivalen: Pernyataan 1, 2, dan 3