Question

Practice Set 12.1
Each equation is followed by the values of the variable. Decide whether
these values are the solutions of that equation.
(1) x - 4 = 3, x = -1, 7, - 7
(2) 9m = 81, m = 3, 9, -3
(3) 2a + 4 = 0, a = 2, -2, 1
(4) 3 - y = 4,
y = -1, 1, 2​

Answer 1

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