Question

me ayudan con estos ejercicios?

Answer 1

(12 - 2)² - 2.10
 (10)² - 2.10
 100 - 2.10
97.9

2 (-5 + 3x )= 10² + 2.5
-10 + 6x = 100+ 2.5
6x = 100 + 2.5 + 10
6x =112.5
x = 112.5/ 6
x=18.75

5x - 11 = 4x + 60
5x - 4x = 60 + 11
x = 71