Question

Como resolver isso?
-1 - a = 1/3

Answer 1

Olá!
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Resolução,

$\mathsf{- 1 - a =\dfrac{1}{3}}$

$\mathsf{- a =\dfrac{1}{1} +\dfrac{1}{3}}$

$\mathsf{- a = \dfrac{3}{3} + \dfrac{1}{3}}$

$\mathsf{- a =\dfrac{4}{3}}$

$\boxed{\mathsf{a = - \dfrac{4}{3}}}$
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Abraços!

Answer 2

- 1 - a = 1/3
- 3/3 - 3a/3 = 1/3
-3 -3a = 1
-3a = 1 + 3
-3a = 4
a = -4/3