Replacing a with 6 in the first expression7, 8(6)+2, 3(6)-5(67, 48+2, 18-37, 50, -12
Replacing b with 46 in the second expression2(0, 3(46)+5)+1, 4(462(0, 138+5)+1, 182(0, 143)+1, 180, 286+1, 180, 144, 184
Replacing a with 1 in the third expression54(b+0,8)+1, 7(2,3)+54(2,3)+1, 7(2,3)+124+1, 16+125, 17
Replacing b with 2,3 in the fourth expression46(1+2,5)-2, 8(1+2,546(3,5)-2, 8(3,5161-2, 3159, 34
Replacing a with 6 in the first expression
7, 8(6)+2, 3(6)-5(6
7, 48+2, 18-3
7, 50, -12
Replacing b with 46 in the second expression
2(0, 3(46)+5)+1, 4(46
2(0, 138+5)+1, 18
2(0, 143)+1, 18
0, 286+1, 18
0, 144, 184
Replacing a with 1 in the third expression
54(b+0,8)+1, 7(2,3)+
54(2,3)+1, 7(2,3)+
124+1, 16+
125, 17
Replacing b with 2,3 in the fourth expression
46(1+2,5)-2, 8(1+2,5
46(3,5)-2, 8(3,5
161-2, 3
159, 34