a + b – 24
4a – 6b
4a + b – 6
a + 4b – 24
–6.4z – 3.5x
z – 6.4 – 3.5x
–6.4z – 3.5xz
–6.4xz – 3.5xz
10.5(12x) square feet
(10.5 + 12 + x) square feet
10.5(12 + x) square feet
126x square feet
(126 + 10.5x) square feet
(22.5 + x) square feet
