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Sanjay solved the equation below. Which property did he use to determine that 7x+42=42 is equivalen...
4 months ago
Q:
Sanjay solved the equation below. Which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=427x+42=427x=0x=0
Accepted Solution
A:
Step-by-step explanation:7(x + 6) = 42distributive property: a(b + c) = ab + ac(7)(x) + (7)(6) = 427x + 42 = 42subtraction property of equality (subtract 42 from both sides)7x + 42 - 42 = 42 - 427x = 0division property of equality (divide both sides by 7)7x : 7 = 0 : 7x = 0