Solve the system of linear equations by substitution

5x+5y=-10
3x - 7y = 4

Step-by-step explanation:

Let's solve the first equation for either x or y. I'll do it for x.

Begin by subtracting 5y.

Now divide by 5.

Simplify:

Now substitute x in the second equation for this value.

Distribute;

Add 6

Combine like terms;

Divide by -10.

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Take this value of y and replace it in the first equation to find the value of x.

42.4

step-by-step explanation:

convert to decimal

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