daca poate cineva sa ma ajute dau coroana!! fara acela care l-am facut cu X
Răspunsuri la întrebare
Răspuns:
Explicație pas cu pas:
a : ( 160 - 25 ) = 3
a : 135 = 3
a = 3 × 135
a = 405
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( 3+4) × a = 560
7 × a = 560
a = 560 : 7
a = 80
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( a - 130 ) : 3 = 500
a - 130 = 500 × 3
a - 130 = 1 500
a = 1 500 + 130
a = 1 630
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5 × ( a + 124 ) = 910
a + 124 = 910 : 5
a + 124 = 182
a = 182 - 124
a = 58
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100 : ( b - 2 ) = 2
b - 2 = 100 : 2
b - 2 = 50
b = 50 + 2
b = 52
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8 × ( 46 + b ) = 480
46 + b = 480 : 8
46 + b = 60
b = 60 - 46
b = 14
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( b + 85 ) : 9 = 10
b + 85 = 10 × 9
b + 85 = 90
b = 90 - 85
b = 5
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( 66 - b ) × 11 = 220
66 - b = 220 : 11
66 - b = 20
b = 66 - 20
b = 46
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( 120 + a ) - 240 = 1 350
120 + a = 1 350 + 240
120 + a = 1590
a = 1 590 - 120
a = 1 470
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160 + ( a - 148 ) = 4 200
a - 148 = 4 200 - 160
a - 148 = 4 040
a = 4 040 + 148
a = 4 188
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( a + 98 ) × 6 = 720
a + 98 = 720 : 6
a + 98 = 120
a = 120 - 98
a = 22
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( a : 9 ) + 712 = 1 030
a : 9 = 1 030 - 712
a : 9 = 318
a = 318 × 9
a = 2 862