3/7=x/63 189=7x 27=x
3/7=x/56 168=7x 24=x
x = 7 7-4/3 x 7 = 1/7 3/21 = 1/7
x/3 - 7 = 2=> x/3 = 9 (add 7 to both sides) => x = 27 (multiply both sides by 3).
To solve for x, you will need to set the two expressions equal to each other: (x - 3)/4 = (x + 3)/7. Cross multiply to get 7(x - 3) = 4(x + 3). Expand and solve for x to get 7x - 21 = 4x + 12. Simplify to get 3x = 33, and then divide by 3 to find x = 11. So, x equals 11.
Solve for x. 3x + 3 = x + 7 2x + 3 = 7 2x = 4 x = 2 Check it. 6 + 3 = 2 + 7 It checks.
-3+x=7. x=10
-3
x = (7 + the square root of 61) over 2, or x = (7 - the square root of 61) over 2
2/7=x/28 56=7x 8=x
2/7=x/14 28=7x 4=x
3 x 3 x 3 over 3 x 3 x 7 reduces to 3 over 7