{3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/17 04:43:47
![{3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③](/uploads/image/z/2568942-54-2.jpg?t=%7B3a%2B4b%2Bc%3D14%E2%91%A0a%2B5b%2B2c%3D17%E2%91%A12a%2B2b-c%3D3%E2%91%A23a%2B4b%2Bc%3D14%E2%91%A0a%2B5b%2B2c%3D17%E2%91%A12a%2B2b-c%3D3%E2%91%A2)
{3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③
{3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③
3a+4b+c=14①
a+5b+2c=17②
2a+2b-c=3③
{3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③3a+4b+c=14①a+5b+2c=17②2a+2b-c=3③
{3a+4b+c=14①
{a+5b+2c=17②
{2a+2b-c=3③
①×2-②得:5a+3b=11④
①+③得:5a+9b=17⑤
⑤-④得:6b=6
b=1
a=1.6
c=5.2
{3a+4b+c=14①
{a+5b+2c=17②
{2a+2b-c=3③
①×2-②得:5a+3b=11④
①+③得:5a+9b=17⑤
⑤-④得:6b=6
b=1
a=1.6
c=5.2