Step-by-step explanation:
25.
x + 3 = 4
x + 3 - 3 = 4 - 3
x = 1
26.
x - 7 = 12
x - 7 + 7 = 12 + 7
x = 19
27.
x + 5 = 1/3
x + 5 - 5 = 1/3 - 5
x = - 14/3 or - 4 2/3
28.
14 = 3 + 2x
2x + 3 - 3 = 14 - 3
2x/2 = 11/2
x = 11/2 or 5.5
29.
3x = 12
3x/3 = 12/3
x = 4
30.
x/5 = 20
x/5 (5) = 20(5)
x = 100
31.
2x/5 = 12
2x/5 (5) = 12 (5)
2x/2 = 60/2
x = 30
32.
3x/4 = 5/12
3x/4 (4) = 5/12 (4)
3x/3 = 5/3 /3
x = 5/3 (1/3)
x = 5/9
33.
2x + 5 = 12
2x + 5 - 5 = 12 - 5
2x/2 = 7/2
x = 7/2 or 3.5
34.
x + 6 /2 = 5
x + 6 /2 (2) = 5(2)
x + 6 = 10
x + 6 - 6 = 10 - 6
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Answers & Comments
Step-by-step explanation:
25.
x + 3 = 4
x + 3 - 3 = 4 - 3
x = 1
26.
x - 7 = 12
x - 7 + 7 = 12 + 7
x = 19
27.
x + 5 = 1/3
x + 5 - 5 = 1/3 - 5
x = - 14/3 or - 4 2/3
28.
14 = 3 + 2x
2x + 3 - 3 = 14 - 3
2x/2 = 11/2
x = 11/2 or 5.5
29.
3x = 12
3x/3 = 12/3
x = 4
30.
x/5 = 20
x/5 (5) = 20(5)
x = 100
31.
2x/5 = 12
2x/5 (5) = 12 (5)
2x/2 = 60/2
x = 30
32.
3x/4 = 5/12
3x/4 (4) = 5/12 (4)
3x/3 = 5/3 /3
x = 5/3 (1/3)
x = 5/9
33.
2x + 5 = 12
2x + 5 - 5 = 12 - 5
2x/2 = 7/2
x = 7/2 or 3.5
34.
x + 6 /2 = 5
x + 6 /2 (2) = 5(2)
x + 6 = 10
x + 6 - 6 = 10 - 6
x = 4