ใพใใ็ธฆใฎ็น็ทใฎ้ทใใฏใ
a+1/2(ไบๅใฎไธ)b+1/2b=a+bใจใชใใพใใๆจชใฎ็น็ทใๅๆงใชใฎใงใl=2(a+b)ใ ใจๆใใพใใ
Mathematics
Junior High
ใในใฆ็ดฐใใๆใใฆใใใ ใใใจใ
ใใใใใใงใใ
Answers
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