Question

solve the following eguations using that trial and error method;2x+4=8

Answer 1

2x=8-4=4
x=4÷2
x=2,
so our x value is 2.

Answer 2

put x=1
2*1+4=8
2+4=8
6=8 not equal
put X=-1
2×(-1)+4=8
-2+4=8
2=8 not equal
put x=2
2*2+4=8
4+4=8
8=8 eqaual
so X=2 is the answer.