Answer:
12.9x-9
Step-by-step explanation:
add 5.3x and 7.6x
First you have to combine the like terms which are 5.3x + 7.6x= 12.9x. Then you just rewrite the equation 12.9x-9. You just leave the 9 by it self because there's no other like terms.
More examples -
5.3x+−9+7.6x
Combine Like Terms:
=5.3x+−9+7.6x
=(5.3x+7.6x)+(−9)
=12.9x+−
second one
we have
Adds 16 both sides
Area of the bigger rectangle =(18×8)cm
2
=144cm
Area of the smaller rectangle =((30−18)×(8−6))=(12×6)cm
=72cm
∴ Total area = area of smaller rectangle + area of bigger rectangle =(72+144)cm
=216cm
