Anonym Anonym
  • 30-03-2015
  • Mathematics
Answered

solve y-2x=3 and 3x-2y=5 using substitution

Answer :

iGreen
iGreen iGreen
  • 30-03-2015
y - 2x = 3
3x - 2y = 5

y - 2x = 3

Add 2x to both sides:

y = 2x + 3

Plug in 2x + 3 for 'y' in the 2nd equation:

3x - 2(2x + 3) = 5

Distribute -2:

3x - 4x - 6 = 5

Combine like terms:

-x - 6 = 5

Add 6 to both sides:

-x = 11

Multiply -1 to both sides:

x = -11

Now plug this into any of the 2 equations to solve for 'y':

y - 2x = 3

y - 2(-11) = 3

Multiply:

y + 22 = 3

Subtract 22 to both sides:

y = -19

So the solution is (-11, -19)
Answer Link

Other Questions

What property do solids and liquids share What property do liquids and gases share
is 80 oz less than 5 lb
In a cold pack an reaction draws heat from the surroundings A exothermic B endothermic C exergonic
Which of the following statements about asteroids is true A Asteroids are all very large and are mostly made up of stone iron and nickel B Asteroids are all ver
list least to greatest 153825123423457825
if 100 drops of liquid 01 oz how many oz is 100 drops
Explain the central difference between main details and supporting details of a piece of writing
Which is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation free of known diseases costeffective to r
How to graph the function with the given domain Then how to identify the range of the function y2x4 Domain x 0 Please show all steps and answer
Which verb agrees in number with its subject The old traditional march for royalty A performing B are performed C is performed D performed