berankworthy7153
25.05.2021 •
Mathematics
. Solve for x. a) 10 - 1/4x - 7 b) 3 (x + 8 ) = 21
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Ответ:
a) 10 - 1/4x = 7
1/4x = 7 + 10
= 17
x = 17/ (1/4)
b) 3 (x + 8 ) = 21
x + 8 = 21/3
= 7
x = 7 - 8
= -1
Ответ: