heatherhughes108
heatherhughes108 heatherhughes108
  • 05-02-2017
  • Mathematics
contestada

Solving a linear equation using the substitution method.

2y-x=3
y-x=4

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 05-02-2017
solve for 1 variable
solve for y in 2nd
y-x=4
add x
y=4+x
su that for y in other

2(4+x)-x=3
8+2x-x=3
8+x=3
minus 8
x=-5
sub back
y=x+4
y=-5+4
y=-1


(x,y)
(-5,-1)
Answer Link

Otras preguntas

I need to convert this to a scientific notation 286,300,000,000.00
Write the polynomial in standard form.–7x^2 – x^3 + x^ 5 + 2 A. x^5 + x^3 + 7x^2 + 2  B. x^5 – x^3 – 7x^2 + 2  C. –7x^2 – x^3 + x^5 + 2  D. 7x^2 + x^3 + x^5 + 2
The sum of three numbers is 64. The second number is 3 more than the first. The third number is 11 less than twice the first. Find the numbers.
How do you simplify 8 to the -2 power
plrase help a little stuck here
what is a tendon and a ligament
When Jenny writes the pencil exerts a force of 5N on the paper The Area of the pencil in contact with the paper is 0.5 mm² calculate the pressure of the pencil
a jar contains 133 pennies. a bigger jar contains 1 2/7 times as many pennies. what is the value of the pennies in the bigger jar?
How do deserts form?
18x-(8x-7)=67 what does 'x' equal in this equation?