10
4a x 3
4a x 4b = 16ab Variables can be multiplied just like numbers.
17
4a + 2 = 4(6) + 2 = 24 + 2 = 26
4a-2=7a-6 4=3a a=4/3
4a + 6 - 4a = -10 Combining like terms: 6 = -10 or 4 = 0 which is FALSE. So the solution set is empty.
A = 6
7a-17 = 4a+1 7a-4a = 1+17 3a = 18 a = 6
3a-9 = 6 3a = 6+9 3a = 15 a = 15/3 a = 5 Substitute a = 5 into 4a-1. 4a-1 =4(5)-1 =20-1 =19 Therefore, the value of 4a-1 is 19.
5
4a - 9 = 27 4a = 36 a = 9
4a