What is #4*9div2+(-4+6)#?

1 Answer
Jan 12, 2017

Answer:

#20#

Explanation:

There are two terms. Calculate each one separately.
Within each term the order of operations applies. Multiply and divide are equally strong so can be done in any order.

#color(blue)((4xx9)/2) color(red)(+ (-4+6))#

#= color(blue)(18) color(red)(+2)#

#=20#

Note:

#color(blue)((4xx9)/2)# can be worked out as:

#color(blue)((36)/2) = 18#

or: #color(blue)((cancel4^2xx9)/cancel2)#

#= 2xx9 = 18#