Name the least common multiple (LCM) of the coefficients of each pair of variables. Ignore the signs. QUESTION {-2a +3b = 9
{4a - 2b =3
LCM for a:
LCM for b:

2.) is the most sense

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

It’s d for sure i just did also that’s why