3times a number plus 12 minus 5 times the same number is 22

Which is the most efficient first step to solve x in the equation 3.7x - 18 = -4.3x -34 a. add 3.7x to both sides of the equation. b. add 4.3x to both sides of the equation. c. subtract 18 from both sides of the equation. d. subtract 34 from both sides of the equation.

What is the product? (x2+3y+7) [yy+1)

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.