Question

a) (+7×) + (-3×) =
b) (-8×) + (11×) =
c) (-2y) + (-3y) =
d) (-2m) + (-m) =
e) (+5a²) - (-3a²) =
f) (+5×) - (-5×) =
g) (+6×) - (-4×) =
h) (+2y) - (+5y) =

efetue​

Answer 1

Resposta:

$a)( + 7x) + ( - 3x) \\ 7x - 3x \\ 4x$

$b)( - 8x) + (11x) \\ - 8 x + 11x \\ 3x$

$c)( - 2y) + ( - 3y) \\ - 2y - 3y \\ - 5y$

$d)( - 2m) + ( - m) \\ - 2m - m \\ - 3m$

$e)( + 5a {}^{2} ) - ( - 3a {}^{2} ) \\ 5a {}^{2} + 3a {}^{2} \\ 8a {}^{2}$

$f)( + 5x) - ( - 5x) \\ 5x + 5x \\ 10x$

$g)( + 6x) - ( - 4x) \\ 6x + 4x \\ 10x$

$h)( + 2y) - ( + 5y) \\ 2y - 5y \\ - 3y$