Question

Resolva estas equações:
a) 7× + 5 = 0 + 34 b) 47 + 38 + × = 110

c) × - 2× + 4× = 81 d) 2 - 3× = -9 - 4×

e) -10× + 7 - 4× + 13× f)23 - 16 = -6× -2× + 9×

g) 11 + 2× + 3 = -5× + 2 + × h) 7× -1 = 13

i) 6× = 2× + 28 j) 5×- 2 = 18 + 3×

Answer 1

a)7x+5=0+34
7x=34-5
x=29/7

b)47+38+x=110
x=110-47-38
x=25

c)x-2+4x=81
x+4x=81+2
5x=83
x=83/5

d)2-3x=-9+4x
-3x-4x=-9-2
-7x=-11(x1)
7x=11
x=11/7