810+x=1000 17×x=136 1000-x=100 645:x=6 ??????

Question

810+x=1000
17×x=136
1000-x=100
645:x=6
??????

Answer 1

810 + x = 1000
x = 1000 - 810
x = 190

17 × x = 136
x = 136 ÷ 17
x = 8

1000 - x = 100
x = 1000 - 100
x = 900

645 ÷ x = 6
x = 645 ÷ 6
x = 107,5

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