15(x+2.4)+21x=180

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 00:04:04
15(x+2.4)+21x=180
x}K D'.*wߊnDRt@-NLPOS1bB~keouAs@Fqvg5 &q;" L]@_RerKGÃn]s

15(x+2.4)+21x=180
15(x+2.4)+21x=180

15(x+2.4)+21x=180
15x+15*2.4+21x=180
15x+36+21x=180
15x+21x+36=180
36x+36=180
36x=180-36
36x=144
x=144/36
x=4

15x+36+21x=180
36x=144
x=4

15x+2.4x15+21x=180
36x=180-2.4x15
x=4

15(x+2.4)+21x=180
15x+36+21x=180
36x=180-36
36x=144
x=4

11