Mathematics, 29.08.2019 19:50 mike2910
George and bella are asked to solve โ3x โ 30 = 5x + 18. identify where one of them made an error.
george
bella
โ 3x โ 30 = 5x + 18
โ 3x โ 30 โ 5x = 5x + 18 โ5x
โ8x โ 30 = 18
โ 8x โ 30 + 30 = 18 + 30
โ8x = 48
negative 8x over negative 8 equals 48 over negative 8
x = โ 6
โ 3x โ 30 = 5x + 18
โ3x โ 30 โ 3x = 5x + 18 โ 3x
โ 30 = 2x + 18
โ30 โ 18 = 2x + 18 โ18
โ 48= 2x
negative 48 over 2 equals 2x over 2
x=โ24
Answers: 2
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George and bella are asked to solve โ3x โ 30 = 5x + 18. identify where one of them made an error.
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