-5x+2-4x=47
-9x+2=45 |-2
-9x=45 |:(-9)
x=-5
5+5x+2x=40
5+7x=40 |-5
7x=35 |:7
x=5
X=5
116.8
The negetive symbol does not matter when multiplying by two negitive numbers so it is just multiplying 6 by 3 the answer is postitive 18 for both negitive 6*3 and -6*-3 hope that helped!
(-)*(-)=+
-18-8=-26
-1:8=-0,125
Hallo guest
5.0 x 10 ^-3
9+6=15 so divide 117 by 15 which is 7.08
m = 18
49 centimeters
Hmmm...I don't know. I think it's...4000000000000!
\(2x+2y=20 \\ 5x - 3y=15 \\ \mbox{Using the first equation.}\\ 2x=20-2y \\ x=10-y \\ \mbox{now we plug that value of x into the second equation} \\ 5(10-y) - 3y = 15 \\ 50-5y-3y=15 \\ -8y = -35 \\ y = \dfrac {35}{8} \\ x=10-y = 10-\dfrac {35}{8}\\ x=\dfrac {45}{8}\)
www.desmos.com
Just enter the equations in at the left and the graph is drawn for you.
The point you seek is at the intersection of the two lines.
\(1.423828125 = 1 \dfrac{423828125}{1000000000}=1\dfrac{217}{512}\)
