Question

determine o valor da incógnita das inequações:
A) 7x -9 <2x +16
B) 12x -4x -5 ≤ 9x +2

Answer 1

A)

$7x -9 <2x +16\\7x-2x<16+9\\5x<25\\x<5$

B)

$12x -4x -5 \leq 9x +2\\8x-9x\leq 2+5\\-x\leq 7\\x\geq -7$