<PRE><B>Question 27401</B>
Rearrange things so you have just x alone on the left.

Note that when moving things across you change the sign.
Start  18. -3x + 4y = 11

so         -3x      = 11 - 18 -4y

Simplify the right hand side

so         -3x      = -7 -4y

Multiply everything by -1 to get the x on the left side positive

so          3x      = 7 + 4y

Divide both sides by 3

so          x      = (7 + 4y)/3

Best regards, Eric.

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