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2. -15 +10 = -5
3. 36 + (-15) = 21
4. 25 + (-16) = 9
5. no. 5 saya gak mengerti soalnya.
x = -11 -5
x = ( - 16 )
2. x + 10 = -5
x = -5 -10
x = ( - 15 )
3. x + ( -15 ) = 21
x = 21 + 15
x = 36
4. 25 + (-16) = 25 - 16 = 9
5. 105 + x = 56
x = 56 - 105
x = - 49