Respuesta:
1) 7x - 12 = 30
7x = 30 + 12 x = 42/7 x=6
2) 5x - 18 = 77
5x = 77 + 18 x = 95/5 x= 19
3) 8x +12 = 36
8x = 36 - 12 x = 24/8 x= 3
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Verified answer
Respuesta:
1) 7x - 12 = 30
7x = 30 + 12 x = 42/7 x=6
2) 5x - 18 = 77
5x = 77 + 18 x = 95/5 x= 19
3) 8x +12 = 36
8x = 36 - 12 x = 24/8 x= 3