Răspuns:
Explicație pas cu pas:
a + ( 8 × 5 ) = 6 + 7 + 36 : 4
a + 40 = 13 + 9
a + 40 = 22
a = 22 - 40
a = -18
( 8 × 4 ) + a = 6 × 9 + 16 : 2
32 + a = 54 + 8
32 + a = 62
a = 62 - 32
a = 30
b + ( 5 × 5 ) = 63 : 9 + 4 × 7
b + 25 = 7 + 28
b + 25 = 35
b = 35 - 25
b = 10
a - 98 = ( 32 : 4 ) + 225
a - 98 = 8 + 225
a - 98 = 233
a = 233 + 98
a = 331
c - ( 6 × 3 ) = 126 + ( 7 × 5 ) + 27 : 3
c - 18 = 126 + 35 + 9
c - 18 = 170
c = 170 + 18
c = 188
( 7 × 8 ) - d = 92 - 10 × 5
56 - d = 92 - 50
56 - d = 42
d = 56 - 42
d = 14