Please help how to solve

jtedesco said:
.07a + .05c = 630
a + c = 10000
Click to expand...
Two common ways to solve such a system of equations are to solve one equation for one variable and substitute in the other; and to multiply one equation by something so that adding them together will eliminate a variable.

What method have you learned?

What have you tried?

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Hi jtedesco. Here's a video link that shows some worked examples, using the Substitution Method for solving a system of two linear equations. Follow along, using paper and pencil. (If you see anything that you don't understand, then please ask.)

My hope is that you'll understand enough to try the Substitution Method with your system of equations. If so, post how far you got. Thanks!

?

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Otis said:
Hi jtedesco. Here's a video link that shows some worked examples, using the Substitution Method for solving a system of two linear equations. Follow along, using paper and pencil. (If you see anything that you don't understand, then please ask.)

My hope is that you'll understand enough to try the Substitution Method with your system of equations. If so, post how far you got. Thanks!

?

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Click to expand...
Thank you , Substitution Method now is hard for me(
 
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