smartgeeza smartgeeza
  • 22-03-2021
  • Mathematics
contestada

Solve the simultaneous equations
8x – 3y = 30
3x + y = 7​

Respuesta :

jaisabor
jaisabor jaisabor
  • 22-03-2021
Solve for y in 3x+7=y

y=7−3x

Substitute y=7−3x

y=7−3x into 8x−3y=30

8x−3y=30.

17x−21=30

Solve for x

x in 17x−21=30

17x−21=30.

X=3

Substitute x=3 into y=7−3x

y=-2

Therefore,

x=3

y=−2

​

Answer Link

Otras preguntas

In "The deadliest tsunami in history", all of the following were effects of the tsunami except (A) lack of food (B) no clean water (C) mass animal deaths (D) op
A class 4 truck weighs between 14,000 16,000 pounds what is the weight range in tons?
Guadalupe wants to buy new goggles that cost $31.50. She has $4.50 and plans to save $2.25 each week. How many weeks will it take her to save the money?
Please help its for 15 points!!!!!!! Image is attached. What did this artist experiment with to create the drawing of Zeus? a. materials b. critique guidelines
A car and a motorcycle leave at noon from the same location, heading in the same direction. The average speed of the car is 30 mph slower than twice the speed o
What is the most important factor in allowing the cities and villages to grow in Egypt?
the product of 3 integers is -24. the sum of the integers is -12. what are the three integers?
What are the key elements that you can use to build a story around?
M=y2-y1/X2-x1 solve y2
there are 103 students eating lunch in the cafeteria. each table seats 4 students. all the tables are full except for 1 table. how many students are sitting at