Answer:
(a) 5x = 6(x-1.75) = 6x - 6×1.75 = 6x - 10.50
(b) 5x = 6x - 10.50
5x - 6x = 6x - 10.50 - 6x
-1(-1x) = -1(-10.50)
x = 10.50
(c) 5×10.50 =? 6×(10.50-1.75)
52.50 =? 6×(8.75)
52.50 = 52.50 ✔
(d) Tanya bought 5 items at $10.50 each.
Tony bought six items at $8.75 each.
They each spent $52.50