Find the value of x. (3x+5) (7x-15)
Solution :
We simplify the equation to the form, which is simple to understand (3x+5)=(7x-15)
Remove unnecessary parentheses 3x+5=(7x-15)
Remove unnecessary parentheses 3x+5=7x-15
We move all terms containing x to the left and all other terms to the right. +3x-7x=-15-5
We simplify left and right side of the equation. -4x=-20
We divide both sides of the equation by -4 to get
x. x=5