205
18 + 10 + 20 + 30 + 15 + 50= 143
30
a = 20
-15
10
3
It equals 30 15/100 which can be simplified, if you so wish.
5x + 20 = 4x +30 5x - 4x = 30 - 20 x = 10
15
10 plus 20 plus 30plus 40 plus 50 equals 150 because 50 plus 40 equals 90 plus 30 =120+20= 140 then + 10 = 150
Since 30=30 it is TRUE
30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3