发布网友
共1个回答
热心网友
(1)x-78=12.5%
x-0.875=0.125
x-0.875+0.875=0.125+0.875
x=1
(2)x+45x=920
95x=920
95x×59=920×59
x=14
(3)x-37%x=12.6
0.63x=12.6
0.63x÷0.63=12.6÷0.63
x=20
热心网友
(1)x-78=12.5%
x-0.875=0.125
x-0.875+0.875=0.125+0.875
x=1
(2)x+45x=920
95x=920
95x×59=920×59
x=14
(3)x-37%x=12.6
0.63x=12.6
0.63x÷0.63=12.6÷0.63
x=20