1)
3,2x + у,
при x=3, y=6,
3,2 * 3 + 6 = 9,6 + 6 = 15,6
2)
11x-7(x-5) = 7(4+x),
11х - 7х + 35 = 28 + 7х,
11х- 7х - 7х = 28 - 35,
-3х = -7,
х = -7/3,
х = -2 1/3
1)
3,2x + у,
при x=3, y=6,
3,2 * 3 + 6 = 9,6 + 6 = 15,6
2)
11x-7(x-5) = 7(4+x),
11х - 7х + 35 = 28 + 7х,
11х- 7х - 7х = 28 - 35,
-3х = -7,
х = -7/3,
х = -2 1/3