Seudónimo Seudónimo
  • 23-06-2020
  • Mathematics
contestada

4x= 2y + 38; 2 - 3y=x

Simultaneous equation please help

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 23-06-2020

Answer:

x = 59/7, y = -15/7

Step-by-step explanation:

4x= 2y + 38;

2 - 3y=x

We can substitute for x  in the first equation since the second equation is solved for x

4(2-3y) = 2y+38

Distribute

8 - 12y = 2y+38

Add 12y to each side

8-12y+12y = 2y+12y+38

8 = 14y+38

Subtract 38 from each side

-30 = 14y

Divide by 14

-30/14 = y

-15/7 = y

Now solve for x

2 - 3y = x

2 - 3*-15/7 = x

2 +45/7 = x

14/7 + 45/7 = x

59/7 =x

Answer Link

Otras preguntas

What is the kinetic energy of a 2.0 kg object moving at 5 m/s?
TASK 2: FAMILY MEMBERS AND PROFESSIONS Reference this link for assistance with inserting special characters. 1. Look at the family tree below. 2. Then, read the
What can your employer do to protect you from overhead power lines
1) In a recent poll, 35% of the 240 college students polled indicated that they are taking a math class. How many of the students surveyed are taking a math cla
chapter 7 summary of divergent?
Which equation has no solution?
A graph has age (weeks) on the x-axis, and height (inches) on the y-axis. Points are grouped closely together. One point is outside of the cluster. Which statem
describe what happens during the power state of a petrol engine.​
Do a write-up on whether or not you feel the author is a good writer and why. (300 words)
How many values does the expression 6+(x+3)^2 have?​