+449 Which expression is NOT equivalent to 4x + 12y?
A number outside the paranthesis indicate multiplication:
a(b+c) = a*(b+c) and (b+c)a = (b+c)*a
Remember that:
a(b+c) = a*b + a*c, which yields:
a( b*X + C ) = a*b*X + a*C
Mathematicians say that " Multiplication (*) distributes over addition (+)".
If it's nothing outside the paranthesis, you can remove it:
(a+b+c) = a+b+c
Did this help?
A number outside the paranthesis indicate multiplication:
a(b+c) = a*(b+c) and (b+c)a = (b+c)*a
Remember that:
a(b+c) = a*b + a*c, which yields:
a( b*X + C ) = a*b*X + a*C
Mathematicians say that " Multiplication (*) distributes over addition (+)".
If it's nothing outside the paranthesis, you can remove it:
(a+b+c) = a+b+c
Did this help?
