List the elements of the set A = {x : 3x - 7 = 20}
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Answer:
The solution of the equation 3x+ 7 =- 20 is -9.
Consider the equation, 3x + 7 = -20
Transposing 7 from left hand side to right hand side it becomes -7,
3x = - 20- 7
3x = - 27
X = -27/3
X = -9
Step-by-step explanation:
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