1. Lahenda võrrand.

83 – x = 31 x =

x – 54 = 15 x =

79 – x = 45 x =

71 + x = 88 x =

x + 27 = 59 x =

47 + x = 68 x =

2. Lahenda võrrand.

836 – 6 = y + 800 y =

405 + a = 470 – 50 a =

3805 : a = 700 + 61 a =

113 * n = 300 + 39 n =

6725 – k = 2000 * 3 k =

3045 : m = 700 + 315 m =

3. Lahenda võrrand.

35 * x = 16100 x =

500 + z = 790 z =

y : 23 = 78 y =

3148 – t = 969 t =

7035 : x = 67 x =

x + 1124 = 1300 x =

4. Lahenda võrrand.

x – 825 = 2400 x =

8124 – x = 812 x =

2000 : x = 80 x =

x : 24 = 55 x =

36 * x = 4320 x =

x * 72 = 216 x =

5. Lahenda võrrand.

54 – x = 26 x =

x – 840 = 60 x =

1700 : x = 17 x =

435 + x = 823 x =

5436 – x = 1258 x =

1521 : x = 9 x =

x : 37 = 14 x =

6. Lahenda võrrand.

x + 467 = 1500 x =

510 – x = 147 x =

x – 869 = 329 x =

47136 + x = 68295 x =

x – 87060 = 3987 x =

x : 11 = 22033 x =

y * 124 = 2480 y =

7. Lahenda võrrand.

y + 78 = 284 y =

z – 457 = 89 z =

3457 – u = 1670 u =

678 + a = 1289 a =

45786 – y = 23689 y =

8. Lahenda võrrand.

(k – 370) + 56341 = 234708 k =

(m – 301) – 567 = 45089 m =

(c + 89) + 34077 = 43278 c =

67089 – (34 + t) = 22307 t =

(5270 + n) – 536 = 21659 n =

(m – 5785) – 3607 = 303678 m =

9. Lihtsusta avaldist.

45a – 8a + 3a =

74x + 39x + 16x =

99x + 76x – 29x =

136x + 815x +72x + 18 =

43 + 781a + 69a –40a =

10. Lahenda võrrand.

x – 38765 = 354678 x =

y – 47056 = 86556 y =

z – 89348 = 107458 z =

35876 + b = 56718 b =

e + 87659 = 120993 e =

c – 22384 = 33334 c =

g – 19842 = 101151 g =

375412 < d < 375415 d =

102374 < f < 102377 f =

642219 > e > 642215 e =

806900 > g > 806885 g =