What is the first step in solving this system of equations by elimination? 5a + 3b = –9 2a – 5b = –16 a. subtract the two equations. b. add the two equations. c. solve for a. d. multiply the first equation by 2 and the second by –5.

Multiply the first equation by 2 and the second by

Step-by-step explanation:

To solve for a  and b we use elimination method

To eliminate variable 'a', we need to make the coefficient same but with different sign

So we multiply the first equation by 2 and second equation by

When we add both equations, the variable 'a' will get eliminated

Multiply the first equation by 2 and the second by

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step-by-step explanation: