Let R = Rupert's weight

Antoinette = 2R - 7

R + 2R - 7 = 98

3R = 105

Rupert = <<35=35>>35 kg

Antoinette = 2 * 35 - 7 = <<2*35-7=63>>63 kg

Antoinette weighs 63 kilograms.

# Answer

63
<|im_start|>system
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<|im_start|>user
Antoinette weighs 7 less kilograms than twice Rupert's weight. Together they weigh 98 kilograms. How many kilograms does Antoinette weigh?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
63
Antoinette weighs 7 less kilograms than twice Rupert's weight. Together they weigh 98 kilograms. How many kilograms does Antoinette weigh?
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