Question

what is the answer for this?
4x - 3y = 1
2x + 9y = 4

Answer 1

multiply the first equation by 3
(4x - 3y = 1)3------>12x-9y=3

now add both equations

12x-9y=3
+2x+9y=4
-----------
14x=7
x=7/14=1/2

now plug x value into one of the equation

2(1/2)+9y=4
1+9y=4
9y=4-1
y=3/9=1/3

so x=1/2 and y=1/3

Answer 2

why 3?

Answer 3

\[y=\frac{1}{3}\]
not 3

Answer 4

thanks

Answer 5

yw :)

Answer 6

\[a ^{2} x a ^{3} x a ^{-2}/ a ^{-3} x a ^{6}=
how about this one please?

Answer 7

\[\frac{a^{2+3-2}}{a^{-3+6}}\]
\[\frac{a^3}{a^3}=1\]

Answer 8

thanks

Answer 9

24x ^{3} y ^{2} z ^{3}/ 4x ^{2} yz ^{2}=
?? help

Answer 10

\[x ^{3} y ^{2} x ^{5} + 2x ^{7} y ^{-4} xy ^{6}\]

Answer 11

dont post questions in the same thread