Question

me ajudeeemmm pllliiiiissss
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Answer 1

Explicação passo-a-passo:

a)

$x+5=8\\x=8-5\\x=3$

S={3}

b)

$x-4=3\\x=3+4\\x=7$

S={7}

c)

$x+6=5\\x=5-6\\x=-1$

S={-1}

d)

$x-7=-7\\x=-7+7\\x=0$

S={0}

e)

$x+9=-1\\x=-1-9\\x=-10$

S={-10}