What is 3 1/2 divided by 3 ?? Olds answer in soo confused!

How do i do this using elimination 2x+3y=12 x-y=6

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.