Question

the value of x=4 is the solution to all following equation except witch? 2x+7=15 x+5=3x-3 3(x+1)=x+11 or x+12=5x-2

Answer 1

except x+12=5x-2 
because:
4+12= 5*4-2
16=20-2
16=18 -- which is not true