Question

What value of x makes the equation true?
–4.9 = –5.7 + x

Answer 1

For this subtract -5.7 to both sides. This cancels out -5.7, so then you have:
-4.9 - -5.7 ~However the double negative equals positive so it would become:
-4.9 + 5.7 which equals 0.8 ~Now let's verify.~
-4.9 = -5.7 + 0.8
-4.9 = -4.9 ~Correct.~
x = 0.8