Please check Algebra
posted by Ediese on .
Please take a look at my work and let me know if I made any mistakes. You don't have to give me the answers. I'd just like to know if I made any mistakes so that I can correct them. Thanks!
1. 3x – 7 = 8
+ 7 +7
3x = 15
3 3 x=5
2. 14x 2 = 3x + 53
14x – 2 = 3x + 53
+2 +2
14x = 3x + 55
3x 3x
11x = 55
11 11 x=5
3. 8x + 4 (6 + x) = 3 (x – 7) + 10x
8x + 24 + 4x = 3x – 21 + 10x
12x + 24 = 7x  21
24 24
12x = 7x  25
+7 +7
19x = 25 x = 44
19 19
4. 1.4x + 2.6 = 0.6x + 1.16
1.16 1.16
1.4x + 2.6 = 0.6x + 1.16
1.4 1.4
1.44 = 0.8x x = 1.8
0.8

5x3y=1
x+4y=9
= (4,9)