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Răspunsuri la întrebare
a. (x × 3 + 47) - 315 =146
x × 50 = 315 + 146
x × 50 = 461
x = 461 : 50
x = 9 , 22
b.( x : 6 - 528) + 307 = 517
x : 6 - 528 = 517 - 307
x : 6 - 528 = 210
x : 6 = 528 + 210
x : 6 = 738
x = 738 : 6
x = 123
c. ( x : 3 -3 ) × 9 = 306
x : 3 - 3 = 306 : 9
x : 3 - 3 = 34
x : 3 = 34 + 3
x : 3 = 37
x = 37 × 3
x = 111
d. ( x : 2 ) × 3 = 30 × 3
( x : 2 ) × 3 = 90
x : 2 = 90 : 3
x : 2 = 30
x = 30 × 2
x = 60
e.( 7 × 9 - x × 5 ) - 27 : 9 = 20
( 63 - x × 5 ) - 27 = 20 × 9
( 63 - x × 5 ) - 27 = 180
63 - x × 5 = 180 + 27
63 - x × 5 = 207
63 - x = 207 : 5
63 - x = 41 , 4
x = 63 + 41 , 4
x = 104 , 4
f. 909 : 9 - ( 9 × 9 : x - 9 ) = 101
101 - ( 81 : x - 9 ) = 101
101 - 81 : x - 9 = 101
20 : x = 101 + 9
20 : x = 110
x = 110 : 20
x = 5 ,5
g. 35 × 5 - 54 : x × 4 = 139
155 - 54 : x = 139 : 4
101 : x = 34 , 75
x = 101 : 34 , 75
x = 2 , 9
h.60 - 10 : ( 37 - 4 × x ) = 50
50 : ( 37 - 4 × x ) = 50
50 : 37 - 4 × x = 50
1 , 35 - 4 × x = 50
2 , 7 × x 50
x = 50 : 2, 7
x = 18 , 5
i. 81 + 9 : 9 × ( x + 7) = 101
90 : 9 × x + 7 = 101
10 × x = 101 - 7
10 × x = 94
x = 94 : 10
x = 9 , 4
Î. 38 + ( 38 + x : 3 ) - 3 × 10 = 84
38 + 38 + x : 3 - 3 × 10 = 84
76 + x : 3 - 30 = 84
76 + x : 3 = 84 + 30
76 + x : 3 = 114
76 + x = 114 × 3
76 + x = 342
x = 342 - 76
x = 266