Simplified0.0
\[\leadsto \color{blue}{\mathsf{fma}\left(t + \left(y - 2\right), b, x - \mathsf{fma}\left(y - 1, z, \left(t + -1\right) \cdot a\right)\right)}
\]
Proof
(fma.f64 (+.f64 t (-.f64 y 2)) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (+.f64 t -1) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (Rewrite<= associate--l+_binary64 (-.f64 (+.f64 t y) 2)) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (+.f64 t -1) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (Rewrite<= +-commutative_binary64 (+.f64 y t)) 2) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (+.f64 t -1) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (+.f64 t (Rewrite<= metadata-eval (neg.f64 1))) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (Rewrite<= sub-neg_binary64 (-.f64 t 1)) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (-.f64 x (fma.f64 (-.f64 y 1) z (*.f64 (Rewrite<= remove-double-neg_binary64 (neg.f64 (neg.f64 (-.f64 t 1)))) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (-.f64 x (fma.f64 (-.f64 y 1) z (Rewrite=> distribute-lft-neg-out_binary64 (neg.f64 (*.f64 (neg.f64 (-.f64 t 1)) a)))))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (-.f64 x (Rewrite<= fma-neg_binary64 (-.f64 (*.f64 (-.f64 y 1) z) (*.f64 (neg.f64 (-.f64 t 1)) a))))): 1 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (Rewrite<= associate-+l-_binary64 (+.f64 (-.f64 x (*.f64 (-.f64 y 1) z)) (*.f64 (neg.f64 (-.f64 t 1)) a)))): 0 points increase in error, 0 points decrease in error
(fma.f64 (-.f64 (+.f64 y t) 2) b (Rewrite<= cancel-sign-sub-inv_binary64 (-.f64 (-.f64 x (*.f64 (-.f64 y 1) z)) (*.f64 (-.f64 t 1) a)))): 0 points increase in error, 0 points decrease in error
(Rewrite<= fma-def_binary64 (+.f64 (*.f64 (-.f64 (+.f64 y t) 2) b) (-.f64 (-.f64 x (*.f64 (-.f64 y 1) z)) (*.f64 (-.f64 t 1) a)))): 0 points increase in error, 0 points decrease in error
(Rewrite<= +-commutative_binary64 (+.f64 (-.f64 (-.f64 x (*.f64 (-.f64 y 1) z)) (*.f64 (-.f64 t 1) a)) (*.f64 (-.f64 (+.f64 y t) 2) b))): 0 points increase in error, 0 points decrease in error