raineefry12
raineefry12
13-03-2020
Mathematics
contestada
Please help will mark as brainliest
Respuesta :
amna04352
amna04352
13-03-2020
Answer:
40
Step-by-step explanation:
3x + 7 = 5x - 15
2x = 22
x = 11
QC = 51 - x = 51 - 11 = 40
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