Answer:
Step-by-step explanation:
First you need to get like items on the same side(put the variables on one side and the non-variables on the other). Remember anything you do on one side of the equal, you have to do on the other side, too.
5X+3=7X-1 I'm going to move the -1 first, but you don't have to as long as you keep the equation equal.
5X+3+1=7X-1+1 We know that +1-1 is zero and so is -1+1. So
5X+3+1=7X We don't need to keep that zero.
5X+4=7X Now, we want to move the 5X over.
5X-5X+4=7X-5X Simplify and get rid of the zero.
4=2X Last, we have to divide to get the 2 away from the X.
4/2=2X/2 Not everyone know that slash mean divide, :-).
2=X
Step-by-step explanation:
-5n-10=10
-5n=10+10
-5n=20
n=20/-5
n=-4
C
Solution: the second number is 90
Step by step solution:
A=A
B=5A
C=5A-13
A+5A+5A-13=185
11A-13=185
11A=198
A=18
A=18
B=90
C=77
Hope that helps :)
Answer:
2.2 x10= = 22.2 =22 million.
Step-by-step explanation:
Answer:
Solving equation i and ii, we get;
3x-3y+x+3y=9+12
4x=21
x=21/4
Putting the value of x in equation ii.
(21/4)+3y=12
3y=12-(21/4)
3y=(48-21/4)
y=27/(4*3)
y=9/4
