Using substitution, what is the first step to solve: x=6y+3 and x+2y=5.

x= 9/2 y=1,4

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Step-by-step explanation:

Remark

You could do it a very convoluted way or you could do it simply. The simple way, I think, is the one intended. The x on the second equation is sitting by it itself. So is it in the first equation. Put the x from the first equation into the second.

Solution

x=6y+3 ===> x+2y=5.

6y + 3 + 2y = 5                        First Step

8y + 3 = 5                                Subtract 3 from both sides

8y = 5 - 3                                 Combine

8y = 2                                       Divide by 8

y = 2/8

y = 1/4

x = 6y + 3

x = 6*(1/4) + 3

x = 6/4 + 3

x = 1.5 + 3

x = 4.5

Solution (4.5 , 0.25)

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step-by-step explanation: