katibear
katibear
24-04-2015
Mathematics
Answered
c+2c+12=75
what is the value of c?
Answer :
JessicaRufus
JessicaRufus
24-04-2015
Simplify
c+2c+12
to
3c+12
3c+12=75
Subtract 12 from both sides
3c=75−12
Simplify
75−12
to 63
3c=63
Divide both sides by 3
c=
63/3
Simplify
63/3
to 21
c=21
Answer Link
Albina
Albina
24-04-2015
c+2c+12=75
3c + 12 = 75
3c = 75 - 12
3c = 63
с = 63 : 3
с = 21
______________________
3
× 21 + 12 = 75
63 + 12 = 75
75 = 75
Answer Link
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