Answer:
i. x = -r
ii. x = 2/3
iii. x = \sqrt{r \\ }
Explanation:
i. 3x + 2r = 2x + r
x + 2r = r
x = -r
ii. 5x + 3c = 9c - 4x
9x = 6c (÷9)
x = 6/9 (simplify)
= 2/3
iii. x² = r
x = \sqrt{r \\ }
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