Rearrange 4(2x + y) = 11 + 7y to make x the subject
4(2x + y) = 11 + 7y expand the brackets8x + 4y = 11 + 7y move +4y to the other side8x = 11 + 3y move 8 to the other sidex= (11 + 3y)/8
AY
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