Question

34-2x=7x solve for x

Answer 1

x= 3.78

Explanation:

34-2x=7x

Remember that if you take anything to the other side of the equal sign, its sign becomes the opposite like - becomes + and vice versa, ÷ becomes × and vice versa. Also, our objective is to isolate x.

So shift -2x to the other side to collect the like terms (anything with the same base) and it will become +2x.

So:

34=7x+2x

9x=34

If there is nothing between a variable (x here) and a number (9 here), it simply means that it is multiplying so shifting 9 to the other side will convert it to division.

x= 34/9 (/ is also a symbol of division and it means fraction)

x=3.77777777.......

x= 3.78

(rounded off to 2 decimal places)

Answer 2

`34-2x=7x\\9x=34\\x=(34)/(9)`