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3x+1=49 49-1=48 48/3x x=16
4g+9(48-788)times 58
What is the eighth term of the geometric sequence 3, 12, 48, 192, ... ?
X is the most famous variable in algebra, and a variable is a letter that stands for a number. It is used for you to apply methods of problem solving to get the answer, and the answer will be what x stands for. For example, if you see the problem 48-2x=100, you know you have to solve for x. The next step would be to subtract 48 from both ends of the equation, so you get (48-2x) -48= (100) -48 ---> -2x=52. Then you divide each side by -2 to get x by itself ---> -2x/2=52/-2 ---> x= -26. So you can see that x is not one specific number, it is just a variable.
14y minus 6y means "14 times a number, minus 6 times the same number". If you have 14 things and you take away 6 things, you are left with 8 things. So, 8 times a number equals 48. 8 times what number gets you 48? Since you are already in Algebra I, you know 8 times 6 gets you 48, so the number (y) is 6. The formal Algebra I approach is to combine like terms, then divide. 14y - 6y = 48 (Subtract 6y from 14 y. (14y - 6y = 8y, and the y does not go away) 8y = 48 (Now divide both sides by 8 to get the y all by itself) 8/8y = 48/8 (8/8 is 1, and 48/8 is 6, so 1y = 6. You can lose the 1 because one thing is the thing itself.) y = 6 Does that help? There are many ways to solve this problem, but Algebra I is teaching the proper steps for solving one, two and three step equations. Stick with it.