x over 4= 2x+3 over 15
5x over 4 = 3 + 3 over 4 = 15 over 4 5x over 4 = 15 over 4 times both sides by 4 5x = 15 divide both sides by 5 x = 3
3.75 x 4 = 15
If: x/3 + 10 = 15 Then: x = 15
4x-15=1 15+1=16, 16/4=x=4 x=4
x over 4= 2x+3 over 15
When X = 4, 15X = 15 * X = 15 * 4 = 60
5x over 4 = 3 + 3 over 4 = 15 over 4 5x over 4 = 15 over 4 times both sides by 4 5x = 15 divide both sides by 5 x = 3
x = sin-1 (4/15) ( sin -1 is [SHIFT] [sin] on a calculator ) = 15.5
3.75 x 4 = 15
If: x/3 + 10 = 15 Then: x = 15
4x-15=1 15+1=16, 16/4=x=4 x=4
16
13 ? 15
Use parenthesis next time. I assume you mean, (X/- 4) + 3 = 15 drop parenthesis and multiply through by - 4 X - 12 = - 60 X = - 48 ----------------check in original equation - 48/- 4 + 3 = 15 12 + 3 = 15 15 = 15 --------------checks
x/y = (9/4) / (3/5) = (9/4) * (5/3) = (9*5)/(4*3) = 45/12 = 15/4
x = 11 y = 16