X-3y=7 and 2x-6y=12 solving by elimination

x-3y=7    2x-6y=12

You can multiply -2 in the first equation like this.

x+6y=7

2x-6y=12

Now you can eliminate 6y and -6y so cross them out and do x-2 which is -1 and 7-12 which is -5 -1/-5 would be .2

Angles 1, 4, 5 and 68 degrees are equal.

angles 2,3,6 and 7 equal 112 degrees

Step-by-step explanation:

This is 2 parallel lines cut with a transversal line

each line adds up to 180 degrees so 180-68 = 112

this solves both 6 and 7 with 5 being adjacent

since it is parallel lines corresponding angles are equal, hence 1,4,5 and 68 are equal, then 2,3,6,7 are equal.