Pls i'll matk brainliest

1. four times the sum of a number and 3 is 7 times the number decreased by 3. find the number

2. thirty decreased by 3 times a number is 6 less than 3 times the number. find the number

pls

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat