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68 g + 246 g + 232 g + 134 g + _______ = 1 000 g (1 kg)

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Jers15id
Lets represent:
x= missing gram:

68 g+246 g+232 g+134 g+x=1,000 g
Add like terms
680 g+x=1,000 g
Subtract both sides by 680 g
x=320 g

Hope this helps =)

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