Simplify 12 to the 2nd power times 12 to the 3rd power

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.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.