1/4(2x +1.2)= 3(0.7x + 30 -5 1/2

Answer 1

(1/4)(2x +1.2) = x/2 + 1.2/4

3(.7x + 30 - 5 1/2) = 2.1x + 73.5

.5x + .3 = 2.1x +73.5

1.6x = -73.2

x = -73.2/1.6 = -18.3/.4 = -183/4

x = -45.75

UNLESS you really did mean

1/4(2x+1.2)= 1/(8x + 4.8) = 2.1x +73.5

1 = (8x+4.8)(2.1x +73.5)

16.8x^2 + [(4.8)(2.1)+73.5(4.351.8 =08)]x + 73.5(4.8) = 1

16.8x^2 + 598x + 351.8 = 0

8.4x^2 + 299x + 175.9 = 0

use the quadratic formula

x = -299/16.8 +/- (1/16.8)sqr(299^2 -4(8.4)(175.9))