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x = 7 +5
x = 12
b. 8 -x = 8
8 = x
x = 8
c. 1/2x -3 = 6
1/2x = 6 +3
1/2x = 9
x = 9 : 1/2
x = 9 . 2
x = 18
d. x -4 = 8
x = 8 +4
x = 12
Itu jawabannya.
2. × = 8
3. × = 18
4. × = 12