Question

Resolva as seguintes equações:

c) 28,4m -2=54,8
d)x- (x + 1) = 2 -3(x - 2)

Answer 1

c) 28,4m-2=54,8; 28,4m=54,8+2; m=56,8/28,4;m=2
d) x-(x+1)=2-3(x-2); -x2-x=-1(x-2); -x2-x=-x+2; -x2-x+x=2; x2=2;