Question

AM
NEVOIE DE AJUTOR VA ROG!!!!REPEDE!!
A) 2×[3+5×(2x-1)]=56
B) 3+7×[45-3×(4x+3)]=3

Answer 1

A) 2×(3+10x-5)=56

6+20x-10=56

20x-4=56

20x=60

x=3

B) 3+7×(45-12x-9)=3

3+315-84x-63=3

253-84x=3

250=84x

x=250/84