One of the greatest strengths of behavioral psychology is the ability to clearly observe and measure behaviors. Weaknesses of this approach include failing to address cognitive and biological processes that influence human actions.
Right away we see that expressions (a), (b), and (d) are equivalent, since addition is commutative: $2x + 8 = 8 + 2x$. We now only have to check (c) and (e). If $x=0$, (c) and (e) have the value 4, whereas (a), (b), and (d) have the value 8.So (c) and (e) are not equivalent to (a), (b), and (d).Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either.For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions: $$ \begin{align} &2x+4 \\ &2(x+2) \\ &2(x+1+1) \end{align} $$.o (c) and (e) are not equivalent to (a), (b), and (d). Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either. For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions:
What is 1 over 7 plus 2 over 3 in simplest form? 1/7 + 2/3 (the common denominator is 21)    = (1 x 3)/(7 x 3) + (2 x 7)/(3 x 7)    = 3/21 + 14/21    = (3 + 14)/21    = 17/21, which is in its simp â¦ lest form since both the numerator and the denominator do not have other common factors than 1.NJOY By writing an expression in its simplest form, it makes it as easy as possible to understand it. â¦ For example, if you write out 12(x-y)y2x-2x2(x-3y-2x3)/(4)(x-y) Then you'll have very little luck understanding it. However, if you simplify this expression, you simply get 3.