Question

1+(2×(3+(x-4)×5)÷6)×7=8

Answer 1

1+(2 (3+5×-20)÷6)×7=8
1+(2 (-17+5×)÷6)×7=8
1+2 (-17+5×)supra6×7=8
1+-17+5×supra3×7=8
1+7 (-17+5×)supra3)=8
1+-119+35×supra3=8
3-119+35×=24
-116+35×=24
35×=24+116
35×=140
×=4

Answer 2

1 + { 2 × [ 3 + ( x - 4 ) × 5 ] : 6 } × 7 = 8

{ 2 × [ 3 + ( x - 4 ) × 5 ] : 6 } × 7 = 8 - 1

2 × [ 3 + ( x - 4 ) × 5 ] : 6 = 7 : 7

2 × [ 3 + ( x - 4 ) × 5 ] = 1 × 6

3 + ( x - 4 ) × 5 = 6 : 2

3 + ( x - 4 ) × 5 = 3

( x - 4 ) × 5 = 3 - 3

x - 4 = 0 : 5

x - 4 = 0

x = 0 + 4

x = 4