Տնային աշխատանք (Հանրահաշիվ)16.09.2021

ա)2x + (3x + 1) = 4

2x + 3x + 1 = 4

2x + 3x = 4 — 1

5x = 3

x = 3/5

բ)(2x + 5) + (3x — 8) = 7

2x + 5 + 3x — 8 = 7

2x + 3x = 7 — 5 + 8

5x = 10

x = 2

գ)2x — (x — 1) = 3

2x — x + 1 = 3

2x — x = 3 — 1

x = 2

դ)(2x — 3) — (x + 1) = 1

2x — 3 — x + 1 = 1

2x — x = 1 + 3 — 1

x = 3

ա)3(x — 2) = 8

3x — 6 = 8

3x = 8 + 6

3x = 14

x = 14/3

բ)(x + 2)4 = 7

4x + 8 = 7

4x = 7 — 8

4x = -1

x = -0,25

գ)(2x + 1)9 = 9

18x + 9 = 9

18x = 9 — 9

18x = 0

x = 0

դ)5(2 — 3x) — 7 = 0

10 — 15x — 7 = 0

-15x = 0 — 10 + 7

-15x = -3

x = 0,2

ե)3(x — 5) + 8 = 17

3x — 15 + 8 = 17

3x = 17 + 15 — 8

3x = 24

x = 8

զ)6(x — 3) + 2(x + 2) = 10

6x — 18 + 2x + 4 = 10

6x + 2x = 10 + 18 — 4

8x = 24

x = 3

է)5(x — 1) — 4(x — 2) = 10

5x — 5 — 4x + 8 = 10

5x — 4x = 10 + 5 — 8

x = 7