5 (x - 3) = 7x 2 Step 1 ⇒ 10 (x - 3) = 7x Step 2 ⇒ 10x - 30 = 7x Step 3 ⇒ 3x - 30 = 0 Step 4 ⇒ 3x = 30 Step 5 ⇒ x = 10 Identify the property of equality which yields Step 4.

30 x to the third power - 24 x to the second power + 6x

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