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N76 [4]
4 years ago
8

Add parentheses so that each equation is correct 7+9×3-1=25​

Mathematics
1 answer:
FinnZ [79.3K]4 years ago
5 0

Answer:

7+9(3-1)=25

Step-by-step explanation:

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4 years ago
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4x+11y=7<br><br>4x+3y=-1<br>what are the steps
andreev551 [17]

Answer:

x = -1, y = 1

Step-by-step explanation:

Given that:

\begin{bmatrix}4x+11y=7\\ 4x+3y=-1\end{bmatrix}

Isolate x for 4x + 11y = 7 which ⇒ x=\frac{7-11y}{4}

Substitute x=\frac{7-11y}{4} into the equation: which is:

\begin{bmatrix}4\cdot \frac{7-11y}{4}+3y=-1\end{bmatrix}

Drop Down to:

\begin{bmatrix}7-8y=-1\end{bmatrix}

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Thus, x=\frac{7-11y}{4}

Substitute y = 1

Hence,

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<u><em>~learn with lenvy~</em></u>

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