4 years ago

I WILL GIVE BRAINLIEST!!

Mathematics

1 answer:

ddd [48]4 years ago

6 0

I recommend going to a credible math solving website like mathpapa

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Step-by-step explanation:

Given~:

Solve the system below using elimination

{5x+9y= -10}

{7x+10y= -1}

Solve:

$\begin{bmatrix}5x+9y=-10\\ 7x+10y=-1\end{bmatrix}$

Isolate x ( 5x + 9y = -10 ) : $\mathrm{x=\frac{-10-9y}{5}}$

Substitute: $\mathrm{x=\frac{-10-9y}{5}}$

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Hence, $x=7$

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