Răspuns: Ai rezolvarea mai jos pentru fiecare caz in parte
Explicație pas cu pas:
Buna!
a + 190 + 190 : 10 = 300
a + 190 + 19 = 300
a + 209 = 300
a = 300 - 209
a = 91
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575 - b × 32 - 45 = 50
575 - b × 32 = 50 + 45
575 - b × 32 = 95
575 - 95 = b × 32
480 = b × 32
b = 480 : 32
b = 15
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c - (600 + 315 : 9) = 335
c - (600 + 35) = 335
c - 635 = 335
c = 970
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(100 × d - 110) : 39 = 10
(100 × d - 110) = 10 × 39
100 × d - 110 = 390
100 × d = 390 + 110
100 × d = 500
d = 500 : 100
d = 5
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20 × e - (1950 + 550) : 100 = 6175
20 × e - 2500 : 100 = 6175
20 × e - 25 = 6175
20 × e = 6175 + 25
20 × e = 6200
e = 6200 : 20
e = 310
===============.
35 × f + (800 - 752 : 4) : 2 = 551
35 × f + (800 - 188) : 2 = 551
35 × f + 612 : 2 = 551
35 × f + 306 = 551
35 × f = 551 - 306
35 × f = 245
f = 245 : 35
f = 7
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g : 25 + (100 - 1632 : 51) × 2 = 286
g : 25 + (100 - 32) × 2 = 286
g : 25 + 68 × 2 = 286
g : 25 + 136 = 286
g : 25 = 286 - 136
g : 25 = 150
g = 150 × 25
g = 3750
===============
244 - h × 5 + (300 - 6 × 16) : 4 = 255
244 - h × 5 + (300 - 96) : 4 = 255
244 - h × 5 + 204 : 4 = 255
244 - h × 5 + 51 = 255
295 - h × 5 = 255
295 - 255 = h × 5
40 = h × 5
h = 40 : 5
h = 8
==pav38==
