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14-11-2020
Mathematics

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What is the mABC? help plz

What is the mABC help plz class=

Respuesta :

artology artology

14-11-2020

Answer:

mB=12-x

Step-by-step explanation:

mA+mC+mB=180

9x-12+5x+24+mB=180

9x+5x-12+24+mB=180

14x+12+mB=180

14x+mB=180-12

14x+mB=168

x+mB=168÷14

x+mB=12

mB=12-x

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