Răspuns:
Explicație pas cu pas:
b)
(b-432) +34:2x15=1000-398
(b - 432) + 17 × 15 = 602
( b - 432) + 255 = 602
b - 432 = 602 - 255
b - 432 = 347
b = 347 + 432
b = 779
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c)
454+(22:2x5+c)=24x34-48:4x8
454 + ( 11×5+c) = 816 - 12×8
454 + ( 55 + c) = 816 - 96
55 + c = 720 - 454
55 + c = 266
c = 266 - 55
c = 211
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d)
(d:6+48:4+72:2:6:3) x10=2x100+25x2
( d : 6 + 12 + 36 : 6 : 3) × 10 = 200 + 50
( d : 6 + 12 + 6 : 3 ) ×10 = 250
d : 6 + 12 + 2 = 250 : 10
d : 6 = 25 - 14
d = 11 × 6
d = 66
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e)
32:e+83x4-36:3x5=2x2x7x10
32 : e + 332 - 12×5 = 280
32 : e = 280 + 60 - 332
32 : e = 340 - 332
32 : e = 8
e = 32 : 8
e = 4
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f)
10x7-f+500:100x3x6=5x5x6
70 - f + 5×6×3 = 150
70 - f + 90 = 150
70 - f = 150 - 90
70 - f = 60
f = 70 - 60
f = 10
