Question

Avaliação de Matemática
a) 8x-6=4x6
b) 8+6x=4x+10
c) 5x-4=3x+12
d) 8x=64
e) 10x+8=38
f) x+24=32
g) 6x-4=8
h) 4x-x=9
i) 7x=14
Respondam e pra hj ajuda PF

vali 30 pontos

Answer 1

Resposta:

$b)8+6x=4x+10\\\\8+6x-8=4x+10-8\\\\6x=4x+2\\\\6x-4x=2-4x\\\\2x=2\\\\\ x=2:2\\\\x=1$

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$c)5x-4=3x+12\\\\5x-4+4=0\\\\5x=3x+12+4\\\\5x=2x+16\\\\5x-3x=16-3x\\\\2x=16\\\\x=16:2\\\\x=8$

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$d)8x=64\\\\x=64:8\\\\x=8$

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$e)10x+8=38\\\\10x+8-8=0\\\\10x=38-8\\\\10x=30\\\\x=30:10\\\\x=3$

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$f)x+24=32\\\\x+24-24=0\\\\x=32-24\\\\x=8$

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$g)6x-4=8\\\\6x-4+4=0\\\\6x=8+4\\\\6x=12\\\\x=12:6\\\\x=2$

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$h)4x-x=9\\\\3x=9\\\\x=9:3\\\\x=3$

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$i)7x=14\\\\x=14:7\\\\x=2$

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