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4x + 3y = 4

x - 2y = -10, so add 2y to both sides gives x=2y-10, replace this into first equation gives:

4(2y-10) + 3y = 4, expand that gives 8y-40+3y=4, add 40 to both sides, this gives:

8y + 3y =44, or 11y = 44 giving you y=4.

You have solved for y, now solve for x:

4x + 3y = 4, gives 4x +12 = 4, or 4x=-8 giving x=-2.

So x=-2 and y=4.

QED.

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Q: Can you solve the simultaneous equation 4x plus 3y equals 4 and x-2y equals -10 with steps?
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