Question

Toate exercițiile complete va rog mult

Answer 1

16)

a) x + y + z = 43 - 11 = 32

b) 5z + 3x + 4y = 59 - 27 = 32

c) x - 2y + 13 = 52 = > x - 2y = 52 - 13 = 39

3x - 6y + 1 = 3× (x - 2y) + 1 = 3 × 39 + 1 = 117 + 1 = 118

17) a + b = 13

1 + 12 =

2 + 11 =

3 + 10 =

4 + 9 =

5 + 8 =

6 + 7 =

a = {1 , 2, 3, 4, 5 , 6, 7, 8, 9, 10, 11, 12}

b = { 12. 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1}

18) a + b = 8 ; a > b

5 + 3 = 8

6 + 2 = 8

7 + 1 = 8

Answer 2

16)

a)x+y+z+11=43

x+y+z=43-11=32

b)3•x+4•y+5•z+27=59

5z+3x+4y=59-27=32

c)x-2•y+13=52

x-2y=52-13=39

3(x-2y)=3•39

3x-3•2y=117

3x-6y=117

3x-6y+1=117+1=118

17)

1+12=13

2+11=13

3+10=13

4+9=13

5+8=13

6+7=13

18)

8=1+7

8=2+6

8=3+5