Y = x - 11
y = 19 - 2x

solve by systems of equations

x=10 and y=-1

Step-by-step explanation:

first arrange the like terms together:

x-11=19-2x

x+2x=19+11

then add or subtract the like terms:

3x=30

then make x the subject of formula:

x=30÷3

x=10

after that substitute 10 for x to solve for one:

( you can take any equation form the two for this)

y= 10-11

y=-1

to see if it's correct you can check with the other equation:

y=19-2×10

y=19-20

y=-1

thereby it is correct.

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here