How do you evaluate #3\cdot 5- 6\cdot 7+ ( - 24)#?

1 Answer
Mar 2, 2018

#-51#

Explanation:

There are three terms.

Simplify each to a single number by doing the multiplications.
The three answers can be added or subtracted in the last step.

#color(blue)(3xx5)" "color(red)(-" "6xx7)" "color(green)(+(-24))#

#=color(blue)(15)" "color(red)(-" "42)" "color(green)(-" "24)#

#=-27 " "color(green)(-" "24)#

#=-51#

Or you can combine the two last terms

#=color(blue)(15)" " -66#

#=-51#