algebra
posted by babygirl
15(3+x)=6x9
4515x=6x9
4515x+15x=6x+15x9
45=21x9
45=x9
45/9=5
x=5
is this right

Ms. Sue
No.
Watch your signs in this step:
4515x+15x=6x+15x9
Respond to this Question
Similar Questions

Math(Please check my work.)
(2x3)(x^2+5x3)=2x+10x^215x+9 *Is this correct.? 
lomas
Right answer? 15(x^2+3x) + 7(x^2+3x)  5(x^2+3x) 15x^2+45x+7x^2+21x + 5(x^23x) 15x^2+45x+7x^2+21x5x^215x 17x^2+51x 
Math
f(x)=13x^2 15x14 g(x)=15x^3+14x^215x+12 find f(3) × f(10) + f(7) × g(9) 
Math
f(x)=13x^2 15x14 g(x)=15x^3+14x^215x+12 find f(3) × f(10) + f(7) × g(9) 
math
Solve by elimination 5x+y=2 3x+y=1 This is what I got : 3(5x+y=2) 5(3x+y=1) 15x+3y=6 15x5y=5 2y=1 2 2 Y=1/2 15x+3(1/2)=6 15x+3/2 =6 15x/15= 9/2 /15 X=3/10 
Algebra
I need help trying to put the correct vocabulary words when solving this problem such as grouping, factor, prime factor, GCF, and perfect square, and please check and see if I am doing this correctly. 15x^2+31x+2 In my last problem … 
Algebra
I need help trying to put the correct vocabulary words when solving this problem such as grouping, factor, prime factor, GCF, and perfect square, and please check and see if I am doing this correctly. 15x^2+31x+2 In my last problem … 
Math to hard please help
Add or subtract (4x^2+15x3)(3x^2+5) A. 7x^2+15x8 B. x^2+12x+2 C. x^2+15x8 D. 7x^2+8 Please help me. Thanks 
Math
Ms.lynch has 21 coins in nickles and dimes.Their total value is $1.65. How many of each coin does she have? 
Math?
Which expression is equivalent? −5(−3x − 6) A) 15x + 30 B) 15x − 30 C) −15x + 30 D) −15x − 30