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to isolate the variable x:
Step 1: Combine like terms to get: 5x - 6x - 10x = 7 - 1 - 12
Step 2: Get the x-terms on the same side of the equation: -11x = -6
Step 3: Get the constants on the same side of the equation: -11x + 6 = 0
Step 4: Use Division Property of Equality to isolate the variable x:
Divide both sides by -11: x = -6/(-11)
Simplify: x = 6/11