10x+6(x+8)=99-x
10x + 6x + 48 = 99 – x
10x + 6x + x = 99 – 48
17x = 51
x = 3
34+2(2x-9)=28
34 + 4x – 18 = 28
4x = 28 + 18 – 34
4x = 12
10(7y-2)=120
70y – 20 = 120
70y = 120 + 20
70y = 140
y = 2
10x+6(x+8)=99-x
10x + 6x + 48 = 99 – x
10x + 6x + x = 99 – 48
17x = 51
x = 3
34+2(2x-9)=28
34 + 4x – 18 = 28
4x = 28 + 18 – 34
4x = 12
x = 3
10(7y-2)=120
70y – 20 = 120
70y = 120 + 20
70y = 140
y = 2