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How do you solve this
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2 votes
How do you solve this

How do you solve this-example-1
User Darcey
by
5.2k points

2 Answers

5 votes

7x - 9 = -4x + 90

11x - 9 = 90

11x = 99

x = 9


You can check by substituting the 9 for the x value.

7(9) - 9 = -4(9) + 90

63 - 9 = -36 + 90

54 = 54



User Xiaojueguan
by
5.2k points
1 vote
7x-9=-4x+90
You need to put x in one side.
So it will be 7x+4x=90+9
11x=99 now divide 11 on both sides
11x/11 = 99/11
So final answer is x=9
User Tashi
by
5.4k points
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