甲乙丙之和是26,甲比已大1,甲的2被与丙的和比已大18,求甲乙丙的值.
设甲乙丙分别为X,Y,Z
由题意可知,X+Y+Z=26 ················(1)
X-Y=1 ······················(2)
2X+Z-Y=18 ················(3)
由(1)-(3)得,2Y-X=8 又X=1+Y
所以Y=9 X=10 Z=7
所以甲乙丙分别是10,9,7
甲乙丙之和是26,甲比已大1,甲的2被与丙的和比已大18,求甲乙丙的值.
设甲乙丙分别为X,Y,Z
由题意可知,X+Y+Z=26 ················(1)
X-Y=1 ······················(2)
2X+Z-Y=18 ················(3)
由(1)-(3)得,2Y-X=8 又X=1+Y
所以Y=9 X=10 Z=7
所以甲乙丙分别是10,9,7