Question 1159333
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We could solve 9x-11 = 12 for x, and then plug it into 9x+7 to get the answer. However, solving for x leads to a fraction which isn't ideal.


Instead of isolating x itself, lets isolate 9x


We do this by adding 11 to both sides
9x-11 = 12
9x-11+11 = 12+11
9x = 23


Since we know 9x is equal to 23, we can then add 7 to both sides to find the value of 9x+7
9x = 23
9x+7 = 23+7
9x+7 = <font color=red>30</font>
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