1. 3x - 5 = 2x + 7
3x - 2x = 7 + 5
x = 12
panjang diagonal = 3x -5 = 3.12 + 5 = 31 cm
panjang diagonal = 2x + 7= 2.12 + 7 = 31 cm
3. t = √17² - 8² =√289 - 64=√225= 15 cm
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1. 3x - 5 = 2x + 7
3x - 2x = 7 + 5
x = 12
panjang diagonal = 3x -5 = 3.12 + 5 = 31 cm
panjang diagonal = 2x + 7= 2.12 + 7 = 31 cm
3. t = √17² - 8² =√289 - 64=√225= 15 cm