Răspuns :

Ella4521id

Explicație pas cu pas:

a) 3x=40⁰+50⁰=90⁰

x=90⁰÷3=30⁰

b) 33⁰+180⁰-2x-3+180⁰-3x+5=180⁰

33⁰+360⁰-5x+2=180⁰

35⁰+180⁰-5x=0

215⁰=5x

x=215÷5

x=43⁰

c) 180⁰-4x+3+180⁰-2x-7+180⁰-4x-26=180⁰

360⁰-10x-30=0

330⁰=10x

x=330÷10

x=33⁰

ID Alte intrebari