Homework Sourse1 3 2x2 4 x6 4x 8 2 008x 006 x9 124Solution1 3 2x2 4 x
1. 3 (2x-2) - 4 (x+6) = 4x + 8
2. 0.08x + 0.06 (x+9) = 1.24
Solution
1. 3 (2x-2) - 4 (x+6) = 4x + 8
expanding the brackets: 6x -6 -4x -24 =4x+8
2x -4x -30 = 8
-2x = 38
x= -19
2. 0.08x + 0.06 (x+9) = 1.24
0.08x +0.06x + 0.54 = 1.24
0.14x +0.54 = 1.24
0.14x = 0.7
x = 0.7/0.14 =5
x = 5
