1)x=78-42
x=36
2)x=56+26
x=82
3)x=45+35
x=80
4)x=56-24
x=32
5)x=48-14
x=34
6)-x=17-38
-x=-21
x=21
7)-x=43-65
-x=-22
x=22
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Answers & Comments
1)x=78-42
x=36
2)x=56+26
x=82
3)x=45+35
x=80
4)x=56-24
x=32
5)x=48-14
x=34
6)-x=17-38
-x=-21
x=21
7)-x=43-65
-x=-22
x=22
x + 42 = 78
x = 78 - 42
x = 36
36 + 42 = 78
78 = 78
2)
x - 26 = 56
x = 56 + 26
x = 82
82 - 26 = 56
56 = 56
3)
x - 35 = 45
x = 45 + 35
x = 80
80 - 35 = 45
45 = 45
4)
24 + x = 56
x = 56 - 24
x = 32
24 + 32 = 56
56 = 56
5)
14 + x = 48
x = 48 - 14
x = 34
14 + 34 = 48
48 = 48
6)
38 - x = 17
x = 38 - 17
x = 21
38 - 21 = 17
17 = 17
7)
65 - x = 43
x = 65 - 43
x = 22
65 - 22 = 43
43 = 43