Question

Which is NOT true?a) 9+4=17-4b)8+7=14+3c)11=19-8d)5+8=20-7

Answer 1

To determine which expression is true, we have to do the operations and check that on both sides of the equation is the same number.

Then, in this case we have:

`\begin{gathered} a)9+4=13 \\ 17-4=13 \\ b)8+7=15 \\ 14+3=17 \\ c)19-8=11 \\ d)5+8=13 \\ 20-7=13 \end{gathered}`

notice that the only option that don't match is b, therefore, the option b is not true