Start by expanding n simplifying the expression, you get
48x-32+2=30-12x+90x
48x-30=30+78x
78x-48x=-30-30
30x=-60
x=-2
simplify the eqn into
54*8/9*x - 8/9*36 +2 = -40*(-3/4) + 16*(-3/4)x + 90x
48x - 32 + 2 = 30 - 12x + 90x
arranging like terms on either side
90x - 12x - 48x = -32 + 2 - 30
30x = -60
x = -2
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