Question

Resolva as equações
A) -3(3x-42)=2(7x-52)
B) X/2+1-x/5=1/2

Answer 1

Resposta:

a)-3(3×-42)=2(7×-52)

-9×+126=14×-104

-9×-14×=-104-126

-23×=-230

×=-230/23

×=10

b) ×/2+1-×/5=1/2

5×/10+10/10-2×/10=5/10

5×+10-2×=5

5×-2×=5-10

3×=5

×=5/3