# math

posted by .

12x + 16y=1/5 & 13x + 24y =1/4,find value of x & y.

• math -

5[12x+16y=1/5]
60x+80y=1--->eqn 1
4[13x+24y=1/4]
52x+96y=1
36[60x+80y=1]
30[52x+96y=1]

5[12x+16y=1/5]
60x+80y=1--->eqn 1
4[13x+24y=1/4]
52x+96y=1--->eqn 2
[60x+80y=1]36
[52x+96y=1]30
2160x+2880y=36
-1560x+2880y=30
600x=6
x=1/100
substitute the value of x in any equation
e.g
60(1/100)+80y=1
80y=1-6/10
y=1/200

## Similar Questions

decide whether the given ordered pair is a solution of the equation: 1. 3y+12x=-4; (1/5, -35/15): 2. 8-3x+24y=0; (5, 23/24) I think neither of them are. _______ find the x-intercept of the graph of the equation. 3. 13x-24y=-5 --> …
2. ### Pre Calc

Complete the square to find the center and the radius of the circle. 3x^2+3y^2-12x+24y+15=0
3. ### Chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X?
4. ### chem

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X?
5. ### chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X?
6. ### math

what is the solution sets of the following a) 2x^2-7x-5 b) 5y^2-16y+3 c) 4y^2+5y-6 d) 10x^2-13x+4 e) 12y^2-11y-5 f) 10c^2-21c+9 g) 3m^2+5m-2 h) 12x^2+19x+5
7. ### Urgent Math please check

Very Important I can get someone to check these for me... I have to get an A, and I was wondering if someone could double check these for me. I am about 95% sure they are right, but just need a fresh set of eyes. I know I've been sending …
8. ### algebra

Megan factored the expression 12x^2+13x-14 as (3x+2)(4x-7). But when Jacob applied the foil principle and multiplied out(3x+2)(4x-7), he got 12x^2-13x-14; thus, Megan's solution does not appear to check. Why is that?
9. ### Algebra 1b!

1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7 <--- c. x+1/7 d. 2x+2/7 3. Simplify 6ab^6/4a^7b^10 * a^3b^4/2a^7b^6 a. 7x/8 - 2x/8 …
10. ### math

How do I find vertex, focus and directrix for the following functions?

More Similar Questions