7(a + 3) = 7*a + 7*3 = 7a + 21
7C MINUS bracket open c plus 2 bracket close equals 7c minus c minus 2 equals 6c minus 2
6
2a+5
2b
7(a + 3) = 7*a + 7*3 = 7a + 21
7C MINUS bracket open c plus 2 bracket close equals 7c minus c minus 2 equals 6c minus 2
6
2a+5
2b
6xsquared minus 26x minus 5 over 3xsquared minus 15x
3a - 2b
No
2a+6b
86
minus a minus is plus, so it's -8 + 3, which is 3 - 8, or -5
6