Question

a) 5x-27+x+15=90


b) 5x+5+3x+13=90




c) 4x6+2X=90

Answer 1

a)5x-27+x+15=90
$6x - 12 = 90 \\ 6x = 90 + 12 \\ 6x = 1002 \\ xl = 17$
b)5x+5+3x+13=90
$8x + 18 = 90 \\ 8x = 90 - 18 \\ 8x = 72 \\ x = 9$
c)4×6+2x=90
24+2x=90
2x=90-24
2x=66
x=33