Question

Afla termenul necunoscut din egalitatile de mai jos: a) a-5034=8x5:10,7xa=138-15x5.b) 1692-745+3651=a+880,a:6=2030-8x9

Answer 1

a)
a-5034=8x5:10
a-5034=40:10
a-5034=4
a=4+5034
a=5038

7xa=138-15x5
7xa=138-75
7xa=63
a=63:7
a=9

b)
1692-745+3651=a+880
947+3651=a+880
4598=a+880
a=4598-880
a=3718

a:6=2030-8x9
a:6=2030-72
a:6=1958
a=1958×6
a=11 748

Answer 2

a) a-5034=8×5:10
a-5034=40:10
a-5034=4
a=4+5034
a=5038
7×a=138-15×5
7×a=138-75
7×a=63
a=63:7
a=9
b)1692-745+3651=a+880
947+3651=a+880
4598=a+880
a=4598-880
a=3718
a:6=2030-8×9
a:6=2030-72
a:6=1958
a=1958×6
a=11748