x = 7 7-4/3 x 7 = 1/7 3/21 = 1/7
2/7=x/14 28=7x 4=x
x-7*y*4 >> solve it * is multiply-
28
1.75
4
x=12
3/7=x/63 189=7x 27=x
2/7=x/28 56=7x 8=x
3/7=x/56 168=7x 24=x
log37 - log3x = 4 log3(7/x) = 4 7/x = 34 = 81 x = 7/81
2x + 3 = x - 4 2x + 7 = x x + 7 = 0 x = -7 2(-7) + 3 = -11 (-7) - 4 + -11