lilgetald
19.02.2020 •
Mathematics
? X 3/10 = 2/3 please help me someone
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Ответ:
20/9 or 2
Step-by-step explanation:
x * 3/10 = 2/3
x= 2/3 * 10/3
x= 20/9
Simplified 2
Ответ:
y=-5/9 and x=25/18
Step-by-step explanation:
2x-4y=5
6x-3y=10
Multiple the top by -3
-6x+12y=-15
6x-3y=10
Add both equations
9y=-5
y=-5/9
Plug in y to any equation to find x
6x-3(-5/9)=10
6x+5/3=10
Multiple by 3
18x+5=30
18x=25
x=25/18
Watch out for negative signs