6
You could say nine minus 3c or take 3c away from 9. You could also say the difference of
9 and 3c. examples: six more than a number /addition/ n+6
This does not sound like an equation. This sounds like evaluating an algebraic expression. 3C means 3 times the value of C (which you have given as 21) then subtract 15. 3 x 21 - 15 = 48
Without an equality sign the given expression remains as: 18-3c
2bc + 8b - 3c - 12 is an expression, not an equation or inequality. It cannot, therefore have "an answer".
It is an expression that can be simplified to: 1-4b-5c
ok, let's see: (3a-2a) + (2b+5b) +(-c +3c) = a + 7b +2c I think that's right.
It is an algebraic expression that can be simplified to: 27ce
It is the same as: 21ce as an algebraic expression
This does not sound like an equation. This sounds like evaluating an algebraic expression. 3C means 3 times the value of C (which you have given as 21) then subtract 15. 3 x 21 - 15 = 48
Without an equality sign the given expression remains as: 18-3c
That's going to depend on the values of 'a', 'b', 'c', and 'f'.
55
Without an equality sign the given expression remains as: 18-3c
2bc + 8b - 3c - 12 is an expression, not an equation or inequality. It cannot, therefore have "an answer".
0.6b + 3c
It is an expression that can be simplified to: 1-4b-5c
(2a + 3)(b - 3c)
a + 7b + 2c