Exercise 1: Solve and check using any method. Show your complete solutions.
1.X+5 = 12
2. X-12 = 18
3. 13 = 4x + 1
4.3m + 6 = 12 + 3
5. 11 + x = 3x + 1
1.X+5 = 12
2. X-12 = 18
3. 13 = 4x + 1
4.3m + 6 = 12 + 3
5. 11 + x = 3x + 1
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1.
x + 5 = 12
x = 12 + 5
x = 17
2.
x - 12 = 18
x = 18 + 12
x = 30
3.
13 = 4x + 1
13 - 1 = 4x
12 = 4x
12/4 = 4x/4
3 = x
4.
3m + 6 = 12 + 3
3m + 6 = 15
3m = 15 - 6
3m = 9
3m/3 = 9/3
m = 3
5.
11 + x = 3x + 1
11 - 1 = 3x - x
10 = 2x
10/2 = 2x/2
5 = x