Question

resolva as equações
a5x+23=98
b12x-51=309
c8x-50=102
d64+4x=148

Answer 1

$5x + 23 = 98 \\ 5x = 98 - 23 \\ x = 75 \div 5 \\ x = 15 \\ \\ 12x - 51 = 309 \\ 12x = 309 + 51 \\ x = 360 \div 12 \\ x = 30 \\ \\ 8x - 50 = 102 \\ 8x = 102 + 50 \\ x = 152 \div 8 \\ x = 19 \\ \\ 64 + 4x = 148 \\ 4x = 148 - 64 \\ x = 84 \div 4 \\ x = 21$