Question

3x+4y=14
5x+2y=21
slove the simultaneous eqautiion

Answer 1

x=7/3, y=7/4 u can use any one of the 3 methods

Answer 2

3x+4y =14----(1)

5x+2y=21-----(2)
multiply (2) with 2 and subtract (1) from it

10x+4y=42
3x+4y=14
__________
7x=28
x=28/7

x=4

plug x=4 in (1)

3*4+4y=14

12+4y =14

4y=14-12

4y =2

y =2/4

y=1/2

therefore

x=4,y=1/2