Question

Solve the system algebraically.
4x - 5y = 3
x = 3 - 1/2y
What is the value of x?
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9/7
24/14
33/14

Answer 1

solve for y by substitution and evaluate --> 4(3 - 1/2y) - 5y = 3

Answer 2

then substitute the y value back into one of the equations to solve for x

Answer 3

4x-5y=3...A
x = 3 - 1/2y or x+1/2y=3...B
mutiply the second equation with -10
-10(x+1/2y=3)
-10x-5y=-30
then use both equation A and B eliminate the common
4x-5y=3
-10x-5y=-30
+ + = +
14x=33 (5y will be cancel out)
x=33/14
x=2.35

Answer 4

So it C is the right answer i.e 33/14

Answer 5

Awesome thanks!

Answer 6

u r welcum =)