Question

96-(9 x 5 - 9 x i)= 5 x 6 +57

Answer 1

96-(9x5-9xi)=5x6+57
96-(45-9xi)=30+57
96-(45-9xi)=87
45-9xi=96-87
45-9xi=9
9xi=45-9
9xi=36
i=36:9
i=4

Answer 2

96-(9×5-9×i)=5×6+57
96-(45-9×i)=87
45-9×i=96-87
45-9×i=9
9×i=45-9
9×i=36
i=36÷9
i=4................succes