-2(5x + 16)+ 12 = 50

2 answers:

6 0

Subtract 12 from both sides
-2(5x+16)=50-12

Simplify 50-12 to 38
-2(5x+16)=38

Divide both sides by -2
5x+16=-38/2

Simplify 38/2 to 19
5x+16=-19

Subtract 16 from both sides
5x=-19-16

Simplify-19-16 to -35
5x=-35

Divide both sides by 5
x=-35/5

Simplify 35/5 to 7
x=-7

Hope this helps! :)

ArbitrLikvidat [17]3 years ago

4 0

X will equal -7 in this problem

You might be interested in

castortr0y [4]

Answer:

Its an Arithmetic progression

Step-by-step explanation:

d1= -18-(-25)= 7

d2= -11-(-18)= 7

d1 = d2

r1 = -18/25=0.72

r2 = -11/-8= 0.611

r1 isnt = r2

4 0

2 years ago

<img src="https://tex.z-dn.net/?f=%28%5Cfrac%7Bz%7D%7B4%7D%20%2B30%29%20%2B%20%28%5Cfrac%7Bz%7D%7B2%7D%20%29%20%3D%20180" id="Te

Dovator [93]

Answer:

x = 200

Step-by-step explanation:

Multiply by 4:

x + 120 + 2x = 720

3x = 600 . . . . . . collect terms, subtract 120

x = 200 . . . . . . . divide by 3

_____

Check

(200/4 +30) +(200/2) = 180

(50 +30) + 100 = 180

80 + 100 = 180 . . . . . true

_____ _____

Alternate solution

If you like, you can simply work with the equation given.

(3/4)x + 30 = 180 . . . . collect terms

(3/4)x = 150 . . . . . . . . . subtract 30

x = 200 . . . . . . . . . . . . multiply by 4/3

4 0

3 years ago

Solve using gauss-Jordan elimination X1 - 3x2 = -5 -3x1 - x2 = 5

steposvetlana [31]

$\begin{cases}x_1&-3x_2=-5\\-3x_1&-x_2=5\end{cases}\\\begin{cases}3x_1&-9x_2=-15\\-3x_1&-x_2=5\end{cases}\\\begin{cases}&-10x_2=-10\\-3x_1&-x_2=5\end{cases}\\\begin{cases}&x_2=1\\-3x_1&-1=5\end{cases}\\\boxed{\begin{cases}x_2=1\\x_1=-2\end{cases}}$