How do you solve #7x - ( x - 3) = 3( x + 10)#?
4 Answers
x=9
Explanation:
First, multiply the brackets
Calculate the "
Take away the
Take away the
Divide both sides by
Explanation:
#"distribute brackets on both sides of the equation"#
#7x-x+3=3x+30#
#6x+3=3x+30#
#"subtract "3x" from both sides"#
#6x-3x+3=30#
#3x+3=30#
#"subtract 3 from both sides"#
#3x=30-3=27#
#"divide both sides by 3"#
#rArrx=27/3=9#
#color(blue)"As a check"# Substitute this value into the equation and if both sides are equal then it is the solution.
#"left "=63-(9-3)=63-6=57#
#"right "=3(9+10)=3xx19=57#
#x=9" is the solution"#
Explanation:
We can distribute the parenthesis on the left and right to get
Next, let's combine the left side variables to get
Next, let's subtract
This is unconventional, but since all terms are divisible by
Subtracting
Hope this helps!