Question

求未知数x.x+2.5-y=7-y y+x+13.2=18+y 学到方程了,请用我学方程的方法解决,

Answer 1

x+2.5-y=7-y

x+2.5=7-y+y

x+2.5=7

x=7-2.5

x=4.5

y +x+13.2=18+y

x+13.2=18+y-y

x+13.2=18

x=18-13.2

x=4.8