Select all equations that have one solution. (4 x 8) = 18
X + X - (x + x) = 2 x - x + 2
-3(- x - 2) = 3( x - 2)
3(x) = x + 1
2 x + 2 x + 2 = 4 x + 2

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post