Jawabanmu

Jawaban paling cerdas!
2014-06-16T19:00:47+07:00
1.) -3 + a = 4 --> a = 4 + 3 = 7    ;    15 + b = 7 --> b = 7 - 15 = -8
2.) -9 + y = 8 --> y = 8 + 9 = 17    ;    x + -2 = -3 --> x = -3 + 2 = -1
3.) 2a + -9 = 5 --> a = (5 +9)/2 = 7      ;      13 + 7 = 4b --> b = (13 + 7)/4 = 5

sisanya bisa lah yaa :)

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