Is this the correct answer to the question? If not please give me the right answer and show your steps! thanks!
Solve for x
2(6x-1)+2(2x+5)=120 I got 2 I don't think it's right though _-_
Solve for x
2(6x-1)+2(2x+5)=120 I got 2 I don't think it's right though _-_
-
Good Afternoon, Nicole. Allow me to explain how to solve these types of problems.
2(6x - 1) +2(2x + 5) = 120. Multiply each expression by the coefficient in front of it,
12x -2 + 4x + 10 = 120. Group like terms, watching the sign changes!
12x + 4x = 120 +2 -10. Combine like terms:
16x = 112. Divide both sides by 16 to solve for 'x'.
x = 7. To check this answer, insert it into the original equation in place of 'x'. See it wasn't too hard,
Nicole, was it?
2(6x - 1) +2(2x + 5) = 120. Multiply each expression by the coefficient in front of it,
12x -2 + 4x + 10 = 120. Group like terms, watching the sign changes!
12x + 4x = 120 +2 -10. Combine like terms:
16x = 112. Divide both sides by 16 to solve for 'x'.
x = 7. To check this answer, insert it into the original equation in place of 'x'. See it wasn't too hard,
Nicole, was it?
-
Philo is correct, answer isn't 2, it's 7. You can check it by replacing x with '7' in the equation.
2(6x-1)+2(2x+5)=120
2(6(7)-1)+2(2(7)+5)=120
2(42-1)+2(14+5)=120
2(41)+2(19)=120
82+38=120
120=120
x=7
2(6x-1)+2(2x+5)=120
2(6(7)-1)+2(2(7)+5)=120
2(42-1)+2(14+5)=120
2(41)+2(19)=120
82+38=120
120=120
x=7
-
2(6x-1)+2(2x+5)=120
12x - 2 + 4x + 10 = 120 ... expand brackets
16x + 8 = 120 ... collect
16x = 112 ... subtract 8 from both sides
x = 7
2(6*7 - 1) + 2(2*7+5)
= 2*41 + 2*19
= 2(41 + 19)
= 2*60
= 120 QED
12x - 2 + 4x + 10 = 120 ... expand brackets
16x + 8 = 120 ... collect
16x = 112 ... subtract 8 from both sides
x = 7
2(6*7 - 1) + 2(2*7+5)
= 2*41 + 2*19
= 2(41 + 19)
= 2*60
= 120 QED
-
12x-2+4x+10=120
16x=120-10+2
16x=112
divide both numbers with 16
x=112/16
x=7
:) hope i helped
16x=120-10+2
16x=112
divide both numbers with 16
x=112/16
x=7
:) hope i helped
-
2(6x – 1) + 2(2x + 5) = 120
12x – 2 + 4x + 10 = 120
16x + 8 = 120
16x = 112
x = 7
12x – 2 + 4x + 10 = 120
16x + 8 = 120
16x = 112
x = 7