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3x+2(4x-4)=3 - remove parentheses
3x+ 8x-8=3 - collect like terms
11x- 8 =3 - move the constant to the right
11x=3+8 - calculate
11x = 11 - divide both sides by 11
x= 1
Answer:
9 blue marbles
Step-by-step explanation:
12 divided by 4 = 3
3x3=9
