Question

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Answer 1

A)
3x + 7 = 52
3x = 52 - 7
x = 45 / 3
x = 15

comprobamos remplazando el valor hallado en la ecuación.
3x + 7 = 52
3(15) + 7 = 52
45 + 7 = 52
52 = 52

B)
x² - 8 = 92
x² = 92 - 8
x = √100
x = 10

comprobamos
x² -8 = 92
10² - 8 = 92
100 - 8 = 92
92 = 92