Let's use 3x+7=22. To solve two step equations you have to work backwards. In 3x+7=22 the first step would be to subtract 7 from 7 because 7 is being added to 3x. So the opposite of addition is subtraction. Since we subtracted 7 from 7 we have to subtract 7 from 22 to make the sides match. That leaves us with 3x=15.
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Learning Target: I can learn how to solve a two-step equation
The next step would be to use the inverse operation of multiplication, since 3 is being multiplied by x. The inverse operation of multiplication is division. Then we would divide 3x by 3, which is x, then divide 15 by 3 which is 5. That leaves us with x=5.