alleryꯃꯁꯤꯡ ꯑꯅꯤ ꯑꯁꯤ ꯔꯦꯁꯤꯑꯣ 5 : 7ꯗꯥ ꯂꯩ ꯑꯃꯁꯨꯡ 12 ꯒꯤ ꯃꯇꯨꯡ ꯏꯟꯅꯥ ꯈꯦꯠꯅꯩ꯫ ꯃꯈꯣꯌꯒꯤ ꯁꯦꯅꯐꯝ ꯑꯗꯨꯗꯤ:
A60
B84
C96
D72
Answer & Solution
Correct answer: D. 72
1. ꯅꯝꯕꯔꯁꯤꯡ ꯑꯁꯤ 5x ꯑꯃꯁꯨꯡ 7x ꯀꯧꯕꯤꯌꯨ ꯃꯔꯝ ꯑꯗꯨꯅꯥ ꯃꯈꯣꯌꯒꯤ ꯔꯦꯁꯤꯑꯣ ꯑꯁꯤ 5 : 7ꯗꯥ ꯂꯦꯄꯀꯅꯤ 2. ꯃꯈꯣꯌꯒꯤ ꯈꯦꯠꯅꯕꯥ ꯑꯁꯤ 7x - 5x = 2x ꯑꯣꯏꯒꯅꯤ꯫ 3. 2x = 12 ꯄꯤꯔꯒꯥ, ꯁꯔꯨꯛ ꯑꯃꯅꯥ x = 6. 4. ꯃꯁꯤꯡ ꯑꯁꯤ 30 ꯑꯃꯁꯨꯡ 42ꯅꯤ, ꯃꯔꯝ ꯑꯗꯨꯅꯥ ꯃꯈꯣꯌꯒꯤ ꯁꯣꯝ ꯑꯁꯤ 72. 5. ꯃꯥꯟꯅꯕꯥ ꯃꯑꯣꯡꯗꯥ ꯁꯣꯝ ꯑꯁꯤ 12x = 12 x 6 = 72. _ꯁꯣꯔꯁ: ꯁꯤꯂꯦꯕꯁ ꯃꯦꯊꯁ, Ch 7 ‘ꯀꯝꯄꯥꯔꯤꯡ ꯀ꯭ꯕꯥꯟꯇꯤꯇꯤ’, S7.1 ꯔꯤꯀꯣꯂꯤꯡ ꯔꯦꯁꯤꯑꯣ ꯑꯃꯁꯨꯡ ꯄꯥꯔꯁꯦꯟꯇꯦꯖ_
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