中一數學題題: solving equations(要做的過裎) 1. 3(y+4)=y 2. 2(p-1)=3p-4?
回答 (1)
2015-10-09 3:49 pm
✔ 最佳答案
1. 3(y+4) = y 3y+3*4 = y
3y+12 = y
3y-y = -12
2y = -12
y = -12/2
y = -6
2. 2(p-1)=3p-4
2p-2 = 3p-4
-2+4 = 3p-2p
2 = p
p = 2
參考: *=乘, /=除
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