-0.8=0.13x−0.21xWhat is X?
x = 10-0.80 = 0.13x - 0.21x-0.80 = -0.08x-0.80/ -0.08 = -0.08 x / -0.08x = 10If we convert these numbers into decimals, then-0.80 100% = -80%-0.08 100% = -8% -80% ÷ -8% = 10 the negative signs cancel each other.