Question

(3x + 5) + (x - 1) =90

Answer 1

`x=(43)/(2)`

Explanation:

`Rule: \left(a\right)=a\\=3x+5+x-1=90\\3x+x+5-1=90\\3x+x=4x \rightarrow 4x+5-1=90\\5-1=4 \rightarrow 4x+4=90\\(-4)~4x+4-4=90-4\\4x=86\\(/ 4)~(4x)/(4)=(86)/(4)\\x=(43)/(2)`

Answer 2

Explanation:

x=

43/2