Question 576311
Use order of operations (PEMDOS)


{{{15(4+3x)-8x=26-6(x-9)}}} first distribute the terms inside both sets of parens
{{{(15*4) + (15*3x) - 8x = 26 - (6x) + (6*9)}}} note that on the right side you had to change the sign on the (6*9) term since that is really (-6) * (-9)
{{{60 + 45x - 8x = 26 - 6x + 54}}} now collect like terms
{{{60 + 37x = 80 - 6x}}} now isolate the terms with x in them from the contstant terms
{{{37x + 6x = 80 - 60}}}
{{{43x = 20}}}
{{{x = 20/43}}}