x/9-x=2/7. linear equations
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(a) x/9-x = 2/7.
= x/9-x/1 = 2/7.
= x-9x/9 = 2/7.
= -8x/9 = 2/7.
= -8x×7 = 9×2.
= -x = 9×2/8×7.
= -x = 9×1/4×7.
= -x = 9/28.
= x = -9/28. Ans…
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