我有好多条数学问题都唔识答!( 因为睇唔明D 英文...)希望各位高手们能「拔刀相助」!P.S.Q.1 Find a no.x that can be used to eliminate the fractions in the equation ：c - 5／6 + 3 = 2 - c／8 by multiplying it on both sid

我有好多条数学问题都唔识答!( 因为睇唔明D 英文...)希望各位高手们能「拔刀相助」!P.S.Q.1 Find a no.x that can be used to eliminate the fractions in the equation ：c - 5／6 + 3 = 2 - c／8 by multiplying it on both sid
我有好多条数学问题都唔识答!( 因为睇唔明D 英文...)
希望各位高手们能「拔刀相助」!
P.S.
Q.1
Find a no.x that can be used to eliminate the fractions in the equation ：
c - 5／6 + 3 = 2 - c／8 by multiplying it on both sides.
Q.2
If the two adjacent sides of a square measure y cm and ( 2y - 3 ) cm
respectively,find the perimeter of the square.
Q.3
The cost of tea Y is $ 30 per kg,the cost of tea X is $ 20 per kg.If z kg of tea Y
and ( z + 1 ) kg of tea X are mixed together,and the cost of the mixed tea is
$ 24 per kg.Find z.
Q.4
Anna had a bag of glass beads.She used half of the beads to make a necklace.She and her sister then use 1／6 and 1／7 of the beads respectively to make
two bracelets.If there are 16 glass beads left,find the original no.of glass beads.
Q.5
Two shops sell the same brand of chocolate at the same price.Today they both cut down its price.Shop A lowers the price by 30%,and increases by 30% after a week.Likewise,shop B lowers its price by 40%,and increases by 40% after a
week.Are the price of the chocolate at the two shops still the same after a week?
Q.6
If we draw a triangle on an egg,would the angle sum of triangle be 180°?Explain.
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我有好多条数学问题都唔识答!( 因为睇唔明D 英文...)希望各位高手们能「拔刀相助」!P.S.Q.1 Find a no.x that can be used to eliminate the fractions in the equation ：c - 5／6 + 3 = 2 - c／8 by multiplying it on both sid
我不保证我对题目理解正确.我也不保证我的答案是对的.
Q.1
两边乘一个数能消除分数.两边的分母分别为6和8,最小公倍数24.
Q.2
正方形两边为y和2y-3,解方程y=2y-3得y=3,周长乘4就行了.
Q.3
Y是30$/kg,X是20$/kg,Z kg Y就是30Z $,Z+1 kg X就是(Z+1)*20 $,所以解方程[30Z+(Z+1)*20]/（Z+Z+1)=24得Z＝2
Q.4
设原始数为X,依题列方程,这题我列了几个方程解出来的数都是小数,所以我就不知道这道题怎么解了.
Q.5
X(1-30%)(1+30%)不等于X(1-40%)(1+40%)
Q.6
三角形内角和永远是180,你自己翻译成英文去吧.