Answer:
It equals 3
Step-by-step explanation:
To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.
It is a supplementary angle. D because the add up to 180.
Answer:
380
Step-by-step explanation:
171:45=3,8
3,8*100=380
alright whats your question ?
Since 5x is equal to y.we can write 5x instead of y in the equation.and then solve the equation