reynarrome2 reynarrome2

03-04-2021
Mathematics

contestada

If x−2y=−1 and 8x+4y=5 are true equations, what would be the value of 7x+6y?

Respuesta :

Hrishii Hrishii

03-04-2021

Answer:

7x + 6y = 6

Step-by-step explanation:

x - 2y = - 1..... (1)

8x + 4y = 5...(2)

Subtracting equation (1) from equation (2)

8x + 4y - ( x - 2y) = 5 - (-1)

8x + 4y - x + 2y = 5 + 1

8x - x + 4y + 2y = 6

7x + 6y = 6

Answer Link

Otras preguntas

Enter an expression, in terms of defined quantities and g, for the force that the scale under left pillar shows

HeLpWhat is the first step in solving the equation n/-2. 25=15. 6 ? multiply both sides of the equation by n/-2. 25 multiply both sides of the equation by 15.

Please helppppppp thank you so much

Periodic Table: Why are group 1A elements called alkali metals?

Help Me What can be caused by volcanic eruptions? there is more then one answer so Select all correct answers. A. earthquakes B. lahars C. shifting plate tecton

What is 3/7 as a decimal rounded to 3 decimal places?

1. a) Solve the following quadratic-quadratic system of equations graphically. y– 3x² +12x = 16 y + 4x²– 16x = -12 b.) GRAPH c.) verify your solution (s) algeb

Find the area of sector RST Enter your answer in terms of a fraction of it and rounded to the nearest hundredth.

the half life of a radioactive substance is the time it takes for a quantity of the substance to decay to half of the initial amount . The half-life of the radi

The theory of plate tectonics revolutionized scientific thought because it.