XxKillerMelonxX502 XxKillerMelonxX502
  • 20-09-2019
  • Mathematics
contestada

Solve each of the following equations for x. (a) 5x-7=28 (b) 12-5x= x+30 (c) 5(x+2)= 1-3x
Зx-y=-5 X+2y=3

Respuesta :

S3rene
S3rene S3rene
  • 20-09-2019

a) 5x-7=28

5x=35

x=7

b) 12-5x=x+30

-6x=18

x= -3

c) 5(x+2)=1-3x

5x+10=1-3x

8x= -9

x= -9/8

d) [tex]\left \{ {{3x-y=-5} \atop {x+2y=3}} \right.[/tex]

[tex]\left \{ {{y=5+3x} \atop {x+2y=3}} \right.[/tex]

x+2(5+3x)=3

x= -1

y=5+3(-1)

y=2

Answer Link

Otras preguntas

When do we use passive voice?
Plz help it is a probability question it is soo hard - I have tried and tried
Plz can someone help I have tried this question so many times. Thanks
which types of laws does judasim uphold?
Two jets leave an airport at noon, one flying north at r mi/h, the other flying south at twice that speed. After 3h how far apart are the planes
The density of gold is 19.3g/cm3. The density or iron pyrite is 5.0g/cm3. If a nugget of iron pyrite and a nugget of gold each have a mass of 50g, what can you
What are the three Pythagorean identities?
Why is the name "Ship-Trap Island" in the short story "The Most Dangerous Game" ironic?
The function of chlorophyll in a light reaction is to A bind CO2 to H2O B split to produce O2 C trap light energy D act as a source of CO2
A television station allows 15 minutes of advertising each hour. How many 30 second (1/2 minute) commercials can be run in 1 day?