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Solve 12x = 4(x + 5) Solve 15x - 3(3x + 4) =6 Solve 3x - 5x + 10 = 36 Solve 2(x+3)= x + 10

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LisaTurowski

12x=4(x+5)     (multiplying 4 by each argument in the parenhesis) 12x=4x+20     /-4x both sides 8x=20  /:8 divide both sides by 8 [latex]x= \frac{20}{8}= 2 \frac{4}{8}=2.5 [/latex] 15x-3(3x+4)=6      (-3 times each argument in the parenthesis) 15x-9x-12=6 6x-12=6             /+12 both sides 6x=18        /:6 divide both sides by 6 x=3 3x-5x+10=36 -2x+10=36     /-10 both sides -2x=26      /:(-2) divide both sides by -2 x=-13 2(x+3)=x+10 2x+6=x+10      /-x x+6=10          /-6 x=4

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