The sun of 21/4 and six times a number is equal to 3/4 subtracted from seven times the number . Find the number

Don’t stress make brownies 1/2 cup all-purpose flour

1/4 teaspoon baking powder

1/2 cup Vermont Creamery Sea Salt Cultured Butter- 82% Butterfat

6 ounces (at least 72% cacao) dark chocolate, coarsely chopped

1 teaspoon espresso powder

1 teaspoon pure vanilla extract

1/2 cup sugar

1/2 cup firmly packed light brown sugar

1/4 teaspoon salt

3 large eggs