Question

58+x+20=90 heeeeeeellllpp

Answer 1

58 + x + 20 = 90
58 + 20 + x = 90
78 + x = 90
x = 90 - 78
x = 12

Answer 2

58+x+20=90
x = 90-58-20
x = 32-20
x = 12