Sidney2017
Sidney2017
07-11-2017
Mathematics
contestada
Solve for x- 3x+ 7=22
Respuesta :
tropicaia
tropicaia
07-11-2017
Answer:
–7.5 = x
Explanation:
22 = x – 3x + 7
Subtract 7 from both sides:
22 – 7 = x – 3x + 7 – 7
15 = x – 3x
15 = –2x
Divide by –2 on both sides:
15 ÷ –2 = –2x ÷ –2
–7.5 = x
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