Question

78. Află termenul necunoscut:

a + (8 x 5) = 6 + 7 + 36:4

(8 x 4) + a = 6 x 9 + 16:2

b + (5 x 5) = 63: 9 + 4x7

a - (98) = (32 : 4) + 225

C-(6 x 3) = 126 + (7 x 5) + 27 : 3

(7 X 8) - d = 92 - 10 x 5​

Answer 1

Răspuns:

Explicație pas cu pas:

a + ( 8 × 5 ) = 6 + 7 + 36 : 4

a + 40 = 13 + 9

a + 40 = 22

a = 22 - 40

a = -18

( 8 × 4 ) + a = 6 × 9 + 16 : 2

32 + a = 54 + 8

32 + a = 62

a = 62 - 32

a = 30

b + ( 5 × 5 ) = 63 : 9 + 4 × 7

b + 25 = 7 + 28

b + 25 = 35

b = 35 - 25

b = 10

a - 98 = ( 32 : 4 ) + 225

a - 98 = 8 + 225

a - 98 = 233

a = 233 + 98

a = 331

c - ( 6 × 3 ) = 126 + ( 7 × 5 ) + 27 : 3

c - 18 = 126 + 35 + 9

c - 18 = 170

c = 170 + 18

c = 188

( 7 × 8 ) - d = 92 - 10 × 5

56 - d = 92 - 50

56 - d = 42

d = 56 - 42

d = 14