Question

Solve the inequality 3x/8 +4<= 0.2x +5

Answer 1

x <= 40/7

Explanation:

3x/8 +4<= 0.2x +5

3x/8 - x/5 <= 1

Multiply through by the LCM 40:

15x - 8x = 40

x <= 40/7

Answer 2

x <= 40/7

Explanation:

3x/8 + 4 <= 0,2x + 5 /0,2 = 1/5

3x/8 + 4 <= (1/5)x + 5 /*40

15x + 160 <= 8x + 200 /-160, - 8x

15x - 8x <= 200 - 160

7x <= 40 /:7

x <= 40/7