1)( 63 - 5x ) : а = 6 при а = 3; 2)b : (38x - 95) = 7 при b = 133; 3)15 * ( с - 8x ) = 75...

Question

1)( 63 - 5x ) : а = 6 при а = 3;
2)b : (38x - 95) = 7 при b = 133;
3)15 * ( с - 8x ) = 75 при с = 53;
4)( 6x - d ) * 8 = 104 при d = 29.

Answer 1

1. (63-5x)/3=6
63-5x=6*3
63-5x=18
63-18=5x
45=5x
x=45/5
x=9
2. 133/(38x-95)=7
 133/7=38x-95
19=38x-95
19+95=38x
114=38x
x=114/38
x=3
3. 15*(53-8x)=75
53-8x=75/15
53-8x=5
53-5=8x
48=8x
x=48/8
x=6
4. (6x-29)*8=104
6x-29=104/8
6x-29=13
6x=13+29
6x=42
x=42/6
x=7