Jawaban:
7x+5=2x+21
7x-2x=21-5
5x=16
x=16/5
7.16/5 + 5 =2.16/5+21
112/5+5=32/5+21
137/5=137/5
jadi x adalah 16/5
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Jawaban:
7x+5=2x+21
7x-2x=21-5
5x=16
x=16/5
7.16/5 + 5 =2.16/5+21
112/5+5=32/5+21
137/5=137/5
jadi x adalah 16/5