Question

dau coroana va rog sa ma ajutati urgent!!!

Answer 1

a) 25+a÷(20+4×28-4)=39

a÷(20+112-4)=39-25

a÷128=14

a=14×128=1792

b) 52×5+b=124×3+25×4

260+b=372+100

260+b=472

b=472-260=212

c) 20+3×12+c=148

20+36+c=148

56+c=148

c=148-56=92

d) d-2×(480×2-90÷10)+5=75

d-2×(960-9)=75-5

d-2×951=70

d-1902=70

d=70+1902=1972