5y+3(7y+18)=106
5y + 21y + 54 = 106
5y + 21y = 106 – 54
26y = 52
y = 2
8x+4(13x+32)=308
8x + 52x + 128 = 308
8x + 52x = 308 – 128
60x = 180
x = 3
5(11x-31)-9x=121
55x – 155 – 9x = 121
55x – 9x = 121 + 155
46x = 276
x = 6
5y+3(7y+18)=106
5y + 21y + 54 = 106
5y + 21y = 106 – 54
26y = 52
y = 2
8x+4(13x+32)=308
8x + 52x + 128 = 308
8x + 52x = 308 – 128
60x = 180
x = 3
5(11x-31)-9x=121
55x – 155 – 9x = 121
55x – 9x = 121 + 155
46x = 276
x = 6