Question

Solve for x: −2x + 5 < 7
x > −1
x < −1
x > −6
x < −6

Answer 1

$\\ \sf\longmapsto -2x+5\lt 7$

$\\ \sf\longmapsto -2x\lt 7-5$

$\\ \sf\longmapsto -2x\lt 2$

$\\ \sf\longmapsto x\lt \dfrac{2}{-2}$

$\\ \sf\longmapsto x\lt -1$

Answer 2

Step-by-step explanation:

-2x+5<7

by subtracting 5 from both sides, we get

-2x+5-5<7-5

-2x<2

After dividing both sides by -2, the comparing sign changes and we get

-2x/-2>2/-2

x>-1

Hence, first option is correct.