Its hard to say what went wrong without the question. As for your expression indeed evaluates to a = 2.623
The math language is called latex.
LaTex Tutorial
Cant seem to get 3.89
15.4+(a*5.6)-(11.8/2.5)+3(2+1.1)=34.67
15.4+(a*5.6)-(4.72)+(9.3)=34.67
15.4+(a*5.6)+4.58=34.67
(a+5.6)+19.98=34.67
a=(34.67-19.98)/5.6
a=2.623
Could someone also inform me what everyone uses to write the math on the forum?
Cheers
Its hard to say what went wrong without the question. As for your expression indeed evaluates to a = 2.623
The math language is called latex.
LaTex Tutorial
So on the left you have 5.6a+ (15.4- 11.8/2.5+ 3(2+ 1.1))= 5.6a+ (15.4- 4.72+ 3(3.1))= 5.6a+ (10.68+ 9.3)= 5.6a+ 19.98 and on the right 34.67: 5.6a+ 19.98= 34.67. Subtract 19.98 from both sides: 5.6a= 34.67- 19.98= 14.69. Now divide both sides by 5.6:
a= 14.69/5.6= 2.6232..., NOT 3.89.