3.2(x−1)+1.5(2x−2)=7.44

x = 2.2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

3.2(x - 1) + 1.5(2x - 2) = 7.44

Step 2: Solve for x

Distribute:                         3.2x - 3.2 + 3x - 3 = 7.44Combine like terms:         6.2x - 6.2 = 7.44Isolate x term:                   6.2x = 13.64Isolate x:                            x = 2.2

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                    3.2(2.2 - 1) + 1.5(2(2.2) - 2) = 7.44Multiply:                               3.2(2.2 - 1) + 1.5(4.4 - 2) = 7.44Subtract:                              3.2(1.2) + 1.5(2.2) = 7.44Multiply:                               3.84 + 3.6 = 7.44Add:                                     7.44 = 7.44

Here we see that 7.44 does indeed equal 7.44

∴ x = 2.2 is the solution to the equation.

The correct answer is 10%