Question

Answer 1

a: x+x+x+82=-x-2

=>3x+82=-x-2

=>\(3x+x=-2-82\)

=>\(4x=-84\)

=>\(x=-\dfrac{84}{4}=-21\)

b: \(5\cdot\left(-4\right)\cdot x=-100\)

=>\(-20\cdot x=-100\)

=>\(x=\dfrac{-100}{-20}=5\)

c: \(\left(-1\right)\cdot\left(-3\right)\cdot\left(-6\right)\cdot x=36\)

=>\(-\left(1\cdot3\cdot6\right)\cdot x=36\)

=>-18x=36

=>\(x=\dfrac{36}{-18}=-2\)

d: -151-(3x+1)=(-2)*(-77)

=>-151-3x-1=154

=>-3x-152=154

=>-3x=154+152=306

=>3x=-306

=>\(x=-\dfrac{306}{3}=-102\)