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2602a<br />
a 8<br />
= = 4<br />
2 2<br />
2603a<br />
4x<br />
4⋅( −12)<br />
− 5= − 5=<br />
3 3<br />
−48<br />
− 5=−16− 5=−21 3<br />
2604a−b−d<br />
0,5x + 12<br />
0,5 ⋅ 12 + 12<br />
18<br />
LÖSNINGAR DEL B<br />
2602b<br />
1 1<br />
a = ⋅ 8= 4<br />
2 2<br />
2604c<br />
12,2 + 4,2 z<br />
12,2 + 4,2 7<br />
12,8<br />
2605d<br />
− c<br />
3xy + 5xz −9yz<br />
3⋅2⋅ − 3 + 5⋅2⋅ −4 −9⋅ −3 ⋅ −4<br />
− 18 + −40 −108<br />
−18 −40 −108<br />
−166<br />
( ) ( ) ( ) ( )<br />
( )<br />
2607d<br />
5 x− (2y+ 3)<br />
56 ⋅ −(22 ⋅ + 3)<br />
7<br />
30 − 7 = 23<br />
2609c<br />
( a+ b)<br />
(3 + 4)<br />
2<br />
7<br />
49<br />
2<br />
2<br />
2609d<br />
2<br />
a+ b<br />
2<br />
3+ 4<br />
3+ 16<br />
19<br />
2608a<br />
2x + 3y + 4z<br />
2 2 2<br />
2602c<br />
1 1<br />
= = 116<br />
2a 2⋅8 2603b<br />
x 30 −12<br />
30<br />
− = − =<br />
9 x 9 −12<br />
12 ⎛ 30 ⎞<br />
− −⎜− ⎟=<br />
9 ⎝ 12⎠<br />
12 30<br />
− + = 76<br />
9 12<br />
2605a<br />
1−<br />
xy<br />
1−2⋅ −3<br />
1− −6<br />
1+ 6= 7<br />
( )<br />
( )<br />
2606c<br />
4 9 4 9<br />
+ = + =<br />
r s 2 −3<br />
4 ⎛ 9⎞<br />
+ ⎜− ⎟=<br />
2 ⎝ 3⎠<br />
4 9<br />
− =−1<br />
2 3<br />
( ) ( )<br />
2<br />
2 2<br />
22 ⋅ + 3⋅ − 3 + 4⋅ −4<br />
24 ⋅ + 39 ⋅ + 416 ⋅<br />
8+ 27+ 64<br />
99<br />
2610c<br />
2 2 2 2<br />
m + n 6 + 8<br />
= =<br />
4+ 6 4+ 6<br />
36 + 64 100<br />
= = = 10<br />
10 10<br />
2608b<br />
x − y + 2z<br />
3 3 3<br />
2602d<br />
2 a = 2 8= 1 4<br />
2605b<br />
1−<br />
xz<br />
1−2⋅ −4<br />
1− −8<br />
1+ 8= 9<br />
( )<br />
( )<br />
43<br />
2606d<br />
36 36<br />
5− = 5− =<br />
rs 2⋅( −3)<br />
36 ⎛ 36 ⎞<br />
5− = 5−⎜−<br />
⎟=<br />
−6 ⎝ 6 ⎠<br />
5 −( − 6) = 5 + 6 = 11<br />
(<br />
3<br />
) (<br />
3<br />
)<br />
( ) ( )<br />
3<br />
2 3 2 4<br />
− − + ⋅ −<br />
8− − 27 + 2⋅ −64<br />
8 + 27 − 128 =−93<br />
2610d<br />
2 2<br />
m + n /4+ 6<br />
2 2<br />
6 + 8 /4+ 6<br />
58