Answer:
3×(3×7)
Step-by-step explanation:
Just move the perenthasies to the right
Answer:
YOu have to add them i think
Step-by-step explanation:
First add the 3-4 and then finish it
Answer:
Step-by-step explanation:
tanx=12/18
x=arctan(12/18)
tan(90-x)=12/(a+5)
tan(90-arctan(12/18)=12/(a+5)
a+5=12/tan(90-arctan(12/18))
a=12/tan(90-arctan(12/18))-5
a=3
7/28
(Now we divide both sides by 7 since they can easily be divided by 7)
7÷7=1
28÷7=4
Since we can't divide 1/4 anymore, 7/28 as a simplified fraction is 1/4.