1-"What fool would believe that their religion is 100% correct?"
Reply : Who would believe that the religion that he is practicing is not 100%. To me, I would not tend to believe in anything that shows any flaws. I am a muslim (thanks to Allah) and I have no doubt that the Islamic religion has...
Multiply the second equation by four
-8x + 28 y = 42
Add it with equation one
19 y = 9.5
y = 0.5
substitute this value in any equation, for example 2
7(0.5) - 2x = 10.5
-2x = 6.5
x = -3.25
