Solve the following system of equations. x + y = 12 x – y = 6

Step-by-step explanation:

Given system:

Add up equations:

Find y:

Solution given:

x+y=12[1]

x-y=6[2]

adding equation 1 and 2 we get

x+y+x-y=12+6

2x=18

x=18/2

x=9

substituting value of x in equation 1

9+y=12

y=12-9

y=3

x=9

y=3

answer: we have from thales theorem that because the 2 triangles are similar, jm/jk=jn/jl. we have that jn=x, jl=x+24 and that jm=7 and jk=28. substituting, we get:

x/(x+24)=7/28.

hence, x/(x+24)=1/4. this leads to 4x=x+24, 3x=24, x=8. we have solved for x=jn and this is equal to 8.

step-by-step explanation:

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1