Two Step Algebra

Question 1:

4x - 4 = 0

4x - 4 + 4 = 0 + 4

4x = 4

4 4

x = 1

Verify:

4x - 4 = 0

4(1) - 4 = 0

4 - 4 = 0

0 = 0

Question 2:

10x - 15 = 35

10x - 15 + 15 = 35 + 15

10x = 50

10 10

x = 5

Verify:

10x - 15 = 35

10(5) - 15 = 35

50 - 15 = 35

35 = 35

Question 3:

r - 6 = 7

-3

r -6 + 6 = 7 + 6

-3

r = 13

-3

(-3) r = 13 (-3)

-3

r = - 39

Verify:

r - 6 = 7

-3

39 - 6 = 7

-3

-13 - 6 = 7

7 = 7
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