Question

怎么算90-Ⅹ=2分之1（180-Ⅹ）-12 要过程！！！

求过程与结果！！！！

Answer 1

90-X=1/2(180-X-24)
2(90-X)=180-X-24
180-2X=180-X-24
等式两边都有180抵消，X=24

Answer 2

90-x=1/2（180-x）-12
90-x=90-1/2x-12
-1/2x=-12
x=24

Answer 3

90-X+12=1/2(180-X)
2(102-X)=180-X
204-2X=180-X
x=24

Answer 4

90-x=1/2(180-x)-12
解：90-x=90-1/2x-12
1/2x=12
x=24