SAT Math Systems of Equations (How to Solve)

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Huge SAT Math Review Video Course at the link above to help you boost your score on the new SAT math section.

Learn how to solve systems of equations as they will likely appear on the new and revised SAT math section.

0:18 What is a System of Linear Equations
0:28 Quick Way to Back Substitute to Solve the Systems
1:08 Using the Substitution Method to Solve the System
2:15 Using the Elimination Method to Solve the System
3:50 Example 1 Finding the value of d So the System Has No Solution
6:10 Example 2 Word(Story) Problem Solving a Linear System

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In example of the sat question, how did you arrive that D is equal to 10? Thanks

ambience
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Hi. i have a doubt in the last question. Why cant we simply divide 150 by the rate that is 30 to get the answer, that way it comes out to be 5 which is different than yours. really confused. Even logically if i read 30 pages an hour, i will read 60 in 2 hours, 90 in 3, 120 in4 and 150 in 5 ????

devvratsharma
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So what is the answer for example 1? Thanks!

thebestvideos
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So I appreciate...
Please im repair to SAT test
My skills about solve not good
Because I'm so slow
Please help me teacher

sayeedkhidir
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That was too yada yada through the equation

jessiemayfield
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