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b (49) = 1176
b = 1176 / 49
b) 63 (4+x) =1260
252 + 63 x = 1260
x = (1260 - 252) / 63
x = 1008 / 63
c) 29 (y+16) = 551
29 y + 464 = 551
y = (551 - 464) / 29
y = - 87 / 29
d) 28 (8+z) = 952
224 + 28 z = 952
z = (952 - 224) / 28
z = 728 / 28
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