Question

k) 3x - 2 - 2x - 3 = 0

l) 10 - 9x + 2x = 2 - 3x

m) 4x - 4 - 5x = -6 + 90

n) 2 - 3x = -2x + 12 - 3x

Answer 1

$k)3x-2-2x-3=0\\\\3x-2x-2-3=0\\\\x-2-3=0\\\\x-5=0\\\\x-5+5=0+5\\\\x=5$          $l)10-9x+2x=2-3\\\\10-7x=2-3\\\\10-7x=-1\\\\10-7x-10=-1-10\\\\-7x=-11\\\\\frac{-7x}{-7}=\frac{-11}{-7}\\\\x=\frac{11}{7}$

$m)4x-4-5x=-6+90\\\\4x-5x-4=-6+90\\\\-x-4=-6+90\\\\-x-4=84\\\\-x-4+4=84+4\\\\-x=88\\\\\frac{-x}{-1}=\frac{88}{-1}\\\\x=-88$               $n) 2-3x=-2x+12-3x\\\\2-3x+3x=-2x+12-3x+3x\\\\2=-2x+12\\\\-2x+12=2\\\\-2x+12-12=2-12\\\\-2x=-10\\\\\frac{-2x}{-2}=\frac{-10}{-2}\\\\x=5$

Answer 2

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→ resposta:

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k) 3x - 2 - 2x - 3 = 0

3x - 2x = 2 + 3

x = 5

l) 10 - 9x + 2x = 2 - 3x

-9x + 2x + 3x = 2 - 10

-4x = -8 <- multiplica toda a equação por (-1) para ficar positivo :)

4x = 8

x = 8 / 4

x = 2

m) 4x - 4 - 5x = -6 + 90

4x - 5x = - 6 + 90 + 4

-x = 88 <- multiplica toda equação por (-1) pro X ficar positivo

x = -88

n) 2 - 3x = -2x + 12 - 3x

-3x + 2x + 3x = 12 - 2

2x = 10

x = 10 / 2

x = 5

Espero ter ajudado! sz

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xoxo,

minagu៹