5x+34=5343.50.8=x1813:120=58:x4.2=14:58x.-数学
题文
5x+
4.2=
|
答案
(1)5x+
5x+
5x÷5=5÷5, x=1; (2)
0.8x=3.5×18, 0.8x÷0.8=63÷0.8, x=78.75; (3)
x=
(4)4.2=
|
题文
5x+
4.2=
|
答案
(1)5x+
5x+
5x÷5=5÷5, x=1; (2)
0.8x=3.5×18, 0.8x÷0.8=63÷0.8, x=78.75; (3)
x=
(4)4.2=
|