Subtract the first expression from the second.

$-7p{b}^{2}a, 7a{b}^{2}p$ 

Subtract the first expression from the second.

$6.1a+5.4b, 8.3b-6.3a$ 

Subtract the first expression from the second.

$4a^2+5b^2-6c^2+5, 2a^2-4b^2-5c^2-1$ 

Subtract the first expression from the second.

$3lm-2mn+5nl, 10lmn-5lm-3nl+5mn$ 

Subtract the first expression from the second.

$1-a+a^2-a^3, -2+2a-2a^2+2a^3$ 

Subtract the first expression from the second.

$\frac{1}{3}{x}^{3}y+\frac{1}{2}y{x}^2+\frac{1}{6}{x}^2{y}^2, \frac{2}{3}x{y}^3+\frac{1}{2}x{y}^2+\frac{1}{6}{y}^2{x}^2+\frac{1}{3}y{x}^3$ 

Subtract the first expression from the second.

$12+5a+7b+8ab+10a^{2}b, 13-2a+3b-9ab-2a{b}^2$ 

Subtract the first expression from the second.

$x-y+xyz, z+x-y$ 

Subtract the first expression from the second.

$pq+3qr-rs, 3qp-5rq+3sr$