Estimate each product 27.64 times 3

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.

Long division the problem is 40 ➗ 348 = ?

Explain why the factor 1.5 is broke. into two numbers in the model.