Question

190p+10f=850 & 180p+20f=900
f=calories in a gram of fat P=calories in a gram of protein

Answer 1

i was trying 2 solve it my self but when i wanted to verify the answer its wrong i just need u to help me plz

Answer 2

\[180p+20f=900 \]

Answer 3

then i diveded 400/280

Answer 4

o okies
are supposed to completely cancel out a variable
it does not work like regular single variable substitution

Answer 5

x - y = 0 cancel out any variable 'x' or 'y'
x - y = 0 im going to choose 'x'

x - y = 0 <---------------------------------|
+ x - y = 0 cancel out use multiply by additive inverse of the 'x' value here
-----------

x - y = 0
+ x - y = 0
------------

y = 0

y = value is

x - y = 0 <---------substitute x using in this formula
x - y = 0 <--- if you used this formula for elimination to isolate 'y'

x - y = 0 <--- if you used this formula to isolate 'y'
x - y = 0 <----------- substitute 'x' using this formula

x=
y=

Answer 6

you can simplify it a bit
Factor them out

[ 190p+10f=850 ]
[ 180p+20f=900 ]

19 p + f = 85
9 p + f = 45

Answer 7

that should be much easier to look at and easier to solve