Question

Determinati valoarea lui x care verifica agalitatile:
(x-28):4=125
(x-200*3):9+135=235
(x:8*6):3+274=500
(186+x):9*8+136x2=600
978-(642:x+378):5-880=1
(349+x:5):9x7+573=1000

Answer 1

1)x-28=125 x 4=500=x=500+28=528
2)(x-600):9+135=235
    (x-600):9=235-135=100
   x-600=100 x 9=900
   x=900+600=1500
3)(x:8 x 6):3=500-274=226
 x:8 x 6=226 x 3=678
x:8=678:6=113=x=113 x 8=904
4)(186+x):9 x 8+272=600
(186+x):9 x 8=600-272=328
(186+x):9=328:8=41
186+x=41 x 9=369=x=369-186=183
5)978-(642:x+378):5=880+1=881
(642:x+378):5=978-881=97
642:x+378=97 x 5=485
642:x=485-378=107
x=642:107=6
6)(349+x:5):9 x 7=1000-573=427
(349+x:5):9=427:7=61
349+x:5=61 x 9=549
x:5=200=x=200:5=40.Sper ca te-am ajutat!