Proportions answer pls

y = -0.2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Step-by-step explanation:

Step 1: Define equation

Step 2: Solve for y

Distribute 0.2:                              Cross-multiply:                             Distribute:                                    Subtract 1.8y on both sides:       Subtract 1.8 on both sides:         Divide both sides by 9:              

Step 3: Check

Plug in y to verify it's a solution.

Substitute:                    Multiply:                        Add:                              Multiply:                        Divide:                          

Here we see that -90 does indeed equal -90. ∴ y = -0.2 is indeed a solution of the equation.

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