Question

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a,(x-27)+13*26=348
b,(2x+15)-100/20=20
c,4*(3x-9)+31=104
d,5*(70-3x)+225/15=35
e,3*(x+4)+5x+19=39
g,2*(x+7)+6*(x+5)=68

Answer 1

a) (x - 27) + 13 . 26 = 348

(x - 27) + 338 = 348

x - 27 = 348 - 338

x - 27 = 10

x = 10 + 27

x = 37

b) (2x + 15) - 100/20 = 20

(2x + 15) - 5 = 20

2x + 15 = 20 + 5

2x + 15 = 25

2x = 25 - 15

2x = 10

x = 10 : 2

x = 5

c) 4 . (3x - 9) + 31 = 104

4 . (3x - 9) = 104 - 31

4 . (3x - 9) = 73

3x - 9 = 73/4

3x = 73/4 + 9

3x = 109/4

x = 109/4 : 3

x = 109/12

d) 5 . (70 - 3x) + 225/15 = 35

5 . (70 - 3x) + 15 = 35

5 . (70 - 3x) = 35 - 15

5 . (70 - 3x) = 20

70 - 3x = 20 : 5

70 - 3x = 4

3x = 70 - 4

3x = 66

x = 66 : 3

x = 22

e) 3 . (x + 4) + 5x + 19 = 39

3x + 12 + 5x + 19 = 39

8x + 31 = 39

8x = 39 - 31

8x = 8

x = 8 : 8

x = 1

g) 2 . (x + 7) + 6 . (x + 5) = 68

2x + 14 + 6x + 30 = 68

8x + 44 = 68

8x = 68 - 44

8x = 24

x = 24 : 8

x = 3

Answer 2

a) (x - 27) + 13 . 26 = 348

(x - 27) + 338 = 348

x - 27 = 348 - 338

x - 27 = 10

x = 10 + 27

x = 37

b) (2x + 15) - 100/20 = 20

(2x + 15) - 5 = 20

2x + 15 = 20 + 5

2x + 15 = 25

2x = 25 - 15

2x = 10

x = 10 : 2

x = 5

c) 4 . (3x - 9) + 31 = 104

4 . (3x - 9) = 104 - 31

4 . (3x - 9) = 73

3x - 9 = 73/4

3x = 73/4 + 9

3x = 109/4

x = 109/4 : 3

x = 109/12

d) 5 . (70 - 3x) + 225/15 = 35

5 . (70 - 3x) + 15 = 35

5 . (70 - 3x) = 35 - 15

5 . (70 - 3x) = 20

70 - 3x = 20 : 5

70 - 3x = 4

3x = 70 - 4

3x = 66

x = 66 : 3

x = 22

e) 3 . (x + 4) + 5x + 19 = 39

3x + 12 + 5x + 19 = 39

8x + 31 = 39

8x = 39 - 31

8x = 8

x = 8 : 8

x = 1

g) 2 . (x + 7) + 6 . (x + 5) = 68

2x + 14 + 6x + 30 = 68

8x + 44 = 68

8x = 68 - 44

8x = 24

x = 24 : 8

x = 3

Answer 3

a) (x - 27) + 13 . 26 = 348

(x - 27) + 338 = 348

x - 27 = 348 - 338

x - 27 = 10

x = 10 + 27

x = 37

b) (2x + 15) - 100/20 = 20

(2x + 15) - 5 = 20

2x + 15 = 20 + 5

2x + 15 = 25

2x = 25 - 15

2x = 10

x = 10 : 2

x = 5

c) 4 . (3x - 9) + 31 = 104

4 . (3x - 9) = 104 - 31

4 . (3x - 9) = 73

3x - 9 = 73/4

3x = 73/4 + 9

3x = 109/4

x = 109/4 : 3

x = 109/12

d) 5 . (70 - 3x) + 225/15 = 35

5 . (70 - 3x) + 15 = 35

5 . (70 - 3x) = 35 - 15

5 . (70 - 3x) = 20

70 - 3x = 20 : 5

70 - 3x = 4

3x = 70 - 4

3x = 66

x = 66 : 3

x = 22

e) 3 . (x + 4) + 5x + 19 = 39

3x + 12 + 5x + 19 = 39

8x + 31 = 39

8x = 39 - 31

8x = 8

x = 8 : 8

x = 1

g) 2 . (x + 7) + 6 . (x + 5) = 68

2x + 14 + 6x + 30 = 68

8x + 44 = 68

8x = 68 - 44

8x = 24

x = 24 : 8

x = 3