kdallen21261 kdallen21261
  • 03-03-2020
  • Mathematics
contestada

What is 5y-4x =-7
2y+4x=14
X=?
Y=?

Respuesta :

Officialalehpeter
Officialalehpeter Officialalehpeter
  • 04-03-2020

Answer:

X=3

Y=1

Step-by-step explanation:

In solving simultaneous equations, there are three methods, we have the elimination method, substitution method or graphical method. But for the purpose of this question, we would be using Elimination method.

5y-4x =-7 Equation 1

2y+4x=14 Equation 2

Since x has the same coefficient, it's easy to eliminate by adding up the two equations

5y+2y=7y

-4x+(+4x)=0

-7+(+14)=7

We have 7y=7

Divide both sides by 7,

y=7/7

y=1

Substituting for y in equation 2.

2(1)+4x=14

2+4x=14

4x=14-2

4x=12

x=12/4

x= 3

Answer Link

Otras preguntas

what is the answer for y=__x+__
one of the main reasons that you think Americans should be required to voteplease I need it asap​
9x^2+25 Can someone doble this
How do you define health?
Which of the following represents a solution? * 2 points NaCl (s) HCl (aq) H2O (g) HBr(g)
Is an ionic bond more like a polar covalent bond or a non-polar covalent bond? Explain
im like gonna be posting these because i been on this section since august
an advantage for families with a stay-at-home mother's includes the opportunity for children to from secure attachment true or false
ABCD is a parallelogram. If mZCDA = 63, then mZABC = _?_ The diagram is not to scale.
A building company purchases a large plot of forest-like land with the intention of building a new residential neighborhood. This forest-like area is home to 2