Question

Which of the following is not true?
(1 Point)
(7 + 8) + 9 = 7 + (8 + 9)
O (
78) 9 = 7 * (
89)
7 + 8 x 9 = (7 + 8) (7 +9)
O 7 (8 + 9) = (7 x 8) + (7 x 9)​

Answer 1

Step-by-step explanation:

$(7 + 8 )+ 9 = 7 + (8 + 9) \: \: true \\ (78)9 = 7 \times (89) \: \: false \\ 7 + 8 \times 9 = (7 + 8)(7 + 9) \: \: false \\ 7(8 + 9) = (7 \times 8) + (7 \times 9) \: \: true$