6 is the answer
hope this help
The first part is 1325
10 x 35=350
15 x 65=975
The you add them which equals 1325
Xz+y+1=z. given
y+1=z-xz. subtraction property of equality
y+1=z(1-x) distributive property of multiplication over addition/factoring
(1+y)/(1-x) = z division property of required, given x≠1
<span>Answer: high temperatures and oxygen</span>