10×c= b
what are c and b
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Answer:
variables
Step-by-step explanation:
a symbol which works as a placeholder for expression or quantities that may vary or change
Answer:
Add side by side the equalities: a+b=8 b+c=10 c+a=12 a+b+b+c+c+a=30 2(a+b+c)=30 divide both sides by 2 then a+b+c=15.