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olga nikolaevna [1]

2 years ago

10

-2x+y=1.3 2(0.5x-y)=4.6

1 answer:

Kazeer [188]2 years ago

6 0

1 Solve for <span>yy</span> in <span>-2x+y=1.3<span>−2x+y=1.3</span></span>How?
<span>y=1.3+2x<span>y=1.3+2x</span></span>
2 Substitute <span>y=1.3+2x<span>y=1.3+2x</span></span> into <span>2(0.5x-y)=4.6<span>2(0.5x−y)=4.6</span></span>How?
<span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>
3 Solve for <span>xx</span> in <span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>How?
<span>x=-2.4<span>x=−2.4</span></span>
4 Substitute <span>x=-2.4<span>x=−2.4</span></span> into <span>y=1.3+2x<span>y=1.3+2x</span></span>How?
<span>y=-3.5<span>y=−3.5</span></span>
5 Therefore,
<span>x=-2.4<span>x=−2.4</span></span>
<span>y=-3.5<span>y=−3.<span>5</span></span></span>

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