3 x 5 x 10 = 150
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x/(10-5) = 3 x/5 = 3 x = 3*5 = 15
from 2 3 5 10 remove 2 and 5 asthey already go into 10 as 2 x 5 = 10so only leaving 3 and 10 which3 x 10 = 30Check:30 = 2 x 15 = 3 x 10 = 5 x 6 = 10 x 3
x/10 = 3/5 multiply both sides by 10 x = 30/5 = 6
x2 - 2x - 10 = 5 x2 - 2x - 15 = 0 (x - 5)(x + 3) = 0 x - 5 = 0 and x + 3 = 0 So, x = 5 and x = -3
2 x 45 3 x 30 5 x 18 6 x 15 9 x 10 2 x 3 x 15 3 x 3 x 10 2 x 5 x 9 3 x 5 x 6 2 x 3 x 3 x 5